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DTSTART;TZID=America/Vancouver:20251016T100000
DTEND;TZID=America/Vancouver:20251016T110000
DTSTAMP:20250917T165714Z
CREATED:20250917T165714Z
LAST-MODIFIED:20250917T165714Z
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SUMMARY:CM Seminar: Quantum Field\, Pictorial Field: Interferences and Translations\, Nadia Lichtig\, Quantum Studio ArtXscience
DESCRIPTION:Note: this event is part of the Quantum Studio program sponsored by the French Consulate. Please join us\, and interact with Nadia during her residency at QMI. \nSpeaker: Nadia Lichtig\, Quantum Studio ArtXscience \nTime: 10:00-11:00am \nLocation: BRIM 311 \nTitle: Quantum Field\, Pictorial Field: Interferences and Translations \nAbstract: This lecture explores the influence of quantum physics on an artistic practice in pictorial and sonic gestures. Rather than illustrating scientific concepts\, it examines how notions such as indeterminacy\, superposition\, diffraction\, and entanglement become aesthetic operators. These principles open the way to a conception of the pictorial and the sonic as relational fields\, interwoven with interferences and continuous translations\, where furtive painting emerges as a mode of appearance that resists capture and insists on the fragmentary – proposing an aesthetics of opacity and survival rather than representation.
URL:https://qmi.miffanytark.com/event/cm-seminar-nadia-lichtig-quantum-studio-artxscience/
CATEGORIES:CM Seminar
ATTACH;FMTTYPE=:
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BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20251002T100000
DTEND;TZID=America/Vancouver:20251002T110000
DTSTAMP:20250917T165442Z
CREATED:20250917T165442Z
LAST-MODIFIED:20250917T165442Z
UID:8961-1759399200-1759402800@qmi.miffanytark.com
SUMMARY:CM Seminar: Interplay between metal-to-Insulator-like transition and superconductivity in Ga-doped Re3Ge7 single crystals\, Eundeok Mun\, SFU
DESCRIPTION:Speaker: Eundeok Mun\, SFU \nTime: 10:00-11:00am \nLocation: BRIM 311 \nTitle: Interplay between metal-to-Insulator-like transition and superconductivity in Ga-doped Re3Ge7 single crystals \nAbstract: Growing single crystals of Re3Ge7 allows for detailed investigations into its complex electronic behavior\, revealing it as a material with an emerging unconventional charge ordered state and superconductivity by external pressure and doping. To further explore characteristics\, we have synthesized single crystals of Ga-doped Re3Ge7 and performed magnetization\, electrical resistivity\, specific heat\, and thermoelectric power measurements. In this talk I will share new findings in this system. The obtained x-T phase diagram of Re3(GaxGe1-x)7 exhibits a close relationship between metal-to-insulator-like (MIL) transition and superconducting transition temperature. Interestingly\, superconductivity emerges when the MIL transition becomes a maximum and the maximum superconducting transition temperature can be achieved when the MIL transition is suppressed\, basically forming a superconducting dome. The upper critical field (Hc2) measurements exhibit that Hc2 curves are well described by the Ginzburg-Landau equation in the right side of the superconducting dome. On the other hand\, the Hc2 curve in the left side of the dome deviates from the Ginzburg-Landau model at low temperatures\, where the superconductivity and MIL transition coexists. Furthermore\, samples showing superconductivity indicate a re-entrance of zero-resistance state (peak effect) under external magnetic field\, providing a good opportunity to study complex vortex state.
URL:https://qmi.miffanytark.com/event/cm-seminar-eundeok-mun-sfu/
CATEGORIES:CM Seminar
ATTACH;FMTTYPE=:
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20250925T100000
DTEND;TZID=America/Vancouver:20250925T110000
DTSTAMP:20250917T165137Z
CREATED:20250917T165137Z
LAST-MODIFIED:20250917T165137Z
UID:8956-1758794400-1758798000@qmi.miffanytark.com
SUMMARY:CM Seminar: Superconductivity in twisted bilayer WSe2\, Cory Dean\, Columbia University
DESCRIPTION:Speaker: Cory Dean\, Columbia University \nTime: 10:00-11:00am \nLocation: BRIM 311 \nTitle: Superconductivity in twisted bilayer WSe2 \nAbstract: Superconductivity in twisted bilayer and twisted trilayer graphene results from an interplay between interlayer coupling and a moiré superlattice that gives rise to low-energy flat bands with strong correlations. Similar flat bands have been explored in lattice-mismatched and or twisted heterostructures of other two-dimensional materials beyond graphene such as transition metal dichalcogenides (TMDs). However\, despite a wide range of correlated phenomenon robust demonstration of superconductivity in the TMDs remained absent and its possibility an open question. In my talk I will present our recent observation of superconductivity in twisted bilayer WSe2\, appearing adjacent to a magnetic ordering state.  The ability to vary the twist angle provides a unique capability to modulate the interacting strength in this system and in recent experiments we observe a systematic evolution of the magnetic and superconducting phases.  I will discuss our current understanding of the phase space of correlated states in this moire system\, and how this relates to conventional examples of unconventional superconductors.
URL:https://qmi.miffanytark.com/event/cm-seminar-cory-dean-columbia-university/
CATEGORIES:CM Seminar
ATTACH;FMTTYPE=:
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20250919T130000
DTEND;TZID=America/Vancouver:20250919T140000
DTSTAMP:20250917T163917Z
CREATED:20250917T163917Z
LAST-MODIFIED:20250917T163917Z
UID:8951-1758286800-1758290400@qmi.miffanytark.com
SUMMARY:Special CM Seminar: Rhombohedral graphene: a tunable platform for unconventional superconductivity and collective modes\, Etienne Lantagne-Hurtubise\, Université de Sherbrooke
DESCRIPTION:Speaker: Etienne Lantagne-Hurtubise\, Université de Sherbrooke \nTime: 1:00-2:00pm \nLocation: BRIM 311 \nAbstract: Rhombohedral graphene multilayers are clean and highly-tunable 2D materials that showcase a multitude of symmetry-broken insulating\, metallic and superconducting phases at low temperatures. Their rich phase diagram can further be modified via proximity to transition metal dichalcogenides such as WSe2\, which induce spin-orbit coupling in the graphene layers and lead to a dramatic enhancement of superconductivity. I will first present Hartree-Fock phase diagrams for these systems\, highlighting a spin-canted magnetic phase consistent with recent nano-SQUID experiments. I will then describe a pairing mechanism based on the low-energy collective spin modes (or magnons) associated with spin canting\, which could explain spin-orbit-enhanced superconductivity in these systems. Finally\, I will show how the valley-polarized superconductors recently reported in rhombohedral tetra- and penta-layer graphene could host superconducting collective modes accessible in linear optical spectroscopy.
URL:https://qmi.miffanytark.com/event/special-cm-seminar-rhombohedral-graphene-a-tunable-platform-for-unconventional-superconductivity-and-collective-modes-etienne-lantagne-hurtubise-universite-de-sherbrooke/
CATEGORIES:CM Seminar
ATTACH;FMTTYPE=:
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20250403T080000
DTEND;TZID=America/Vancouver:20250403T170000
DTSTAMP:20250115T235034Z
CREATED:20250115T235034Z
LAST-MODIFIED:20250115T235034Z
UID:8505-1743667200-1743699600@qmi.miffanytark.com
SUMMARY:CM Seminar: Complexity in Josephson Matter\, Charles Marcus\, University of Washington
DESCRIPTION:Speaker: Charles Marcus\, University of Washington \nTime: 10:00-11:00am \nLocation: BRIM 311 \nAbstract: Hybrid superconductors-semiconductor heterostructures allow voltage control of carrier density in superconducting systems. We use these materials to investigate novel gate-controlled arrays of Josephson junctions in a variety of geometries\, examining the interplay of quantum coherence\, Coulomb interaction\, and frustration. Using the example of the dice lattice\, I will draw connections between protected quantum information and quantum phase transitions in two dimensions.
URL:https://qmi.miffanytark.com/event/cm-seminar-charles-marcus-university-of-washington/
CATEGORIES:CM Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20250313T100000
DTEND;TZID=America/Vancouver:20250313T110000
DTSTAMP:20240903T221219Z
CREATED:20240903T221219Z
LAST-MODIFIED:20240903T221219Z
UID:8089-1741860000-1741863600@qmi.miffanytark.com
SUMMARY:CM Seminar: Electron-hole atomic double layers: towards high-temperature exciton condensation\, Jie Shan\, Cornell University
DESCRIPTION:Speaker: Jie Shan\, Cornell University \nTime: 10:00-11:00am \nLocation: BRIM 311 \nTopic: Electron-hole atomic double layers: towards high-temperature exciton condensation \nAbstract: Excitons\, bound electron-hole pairs\, in semiconductors are bosons that can form condensates. With a much smaller mass than atoms\, they have been predicted to condense at a much higher temperature scale. Although the concept has been understood for more than sixty years\, experimental realization of exciton condensates or superfluids has remained challenging. In this talk\, I will discuss our recent efforts in creating a high-density equilibrium exciton fluid in atomic double layers made of semiconducting transition metal dichalcogenides. I will present results from both thermodynamics and transport measurements that establish high-temperature excitonic insulators. I will also discuss the physics of doped excitonic insulators that can support a Bose-Fermi mixture and an equilibrium trion fluid. \n 
URL:https://qmi.miffanytark.com/event/cm-seminar-jie-shan-cornell-university/
CATEGORIES:CM Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20250306T100000
DTEND;TZID=America/Vancouver:20250306T110000
DTSTAMP:20250221T001217Z
CREATED:20250221T001217Z
LAST-MODIFIED:20250221T001217Z
UID:8697-1741255200-1741258800@qmi.miffanytark.com
SUMMARY:CM Seminar: Signature of preformed pairs in angle-resolved photoemission spectroscopy\, Janez Bonca\, University of Ljubljana
DESCRIPTION:Speaker: Janez Bonca\, University of Ljubljana \nTime: 10:00-11:00am \nLocation: BRIM 311 \nAbstract: We use density matrix renormalization group (DMRG) and variational exact diagonalization (VED) to calculate the single-electron removal spectral weight for the Hubbard-Holstein model at low electron densities. Tuning the strength of the electron-phonon coupling and of the Hubbard repulsion allows us to contrast the results for a liquid of polarons versus a liquid of bipolarons. The former shows spectral weight up to the Fermi energy\, as expected for a (uncorrelated) metal. The latter has a gap in its spectral weight\, set by the bipolaron binding energy\, although this is also a (strongly correlated) metal. This difference suggests that angle-resolved photoemission spectroscopy could be used to identify liquids of pre-formed pairs. Furthermore\, we show that the liquid of bipolarons is well approximated by an ensemble of bosons that are hard-core in momentum space\, filling the states inside the Fermi sea but otherwise non-interacting [1]. We have also generalized the calculation to allow for a finite optical phonon dispersion. The spectral function is significantly influenced by the dispersion\, particularly in systems with strong electron-phonon coupling. The sign of the curvature of the phonon band plays a crucial role in the distribution of spectral weight [2]. \nReferences \n• [1] K. Kovaˇc\, A. Nocera\, A. Damascelli\, J. Bonˇca\, and M. Berciu\, to appear in PRL\, arXiv:2409.14490 \n• [2] K. Kovaˇc and J. Bonˇca\, arXiv:2410.11537
URL:https://qmi.miffanytark.com/event/cm-seminar-signature-of-preformed-pairs-in-angle-resolved-photoemission-spectroscopy-janez-bonca-university-of-ljubljana/
CATEGORIES:CM Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20250220T100000
DTEND;TZID=America/Vancouver:20250220T110000
DTSTAMP:20240903T220848Z
CREATED:20240903T220848Z
LAST-MODIFIED:20240903T220848Z
UID:8085-1740045600-1740049200@qmi.miffanytark.com
SUMMARY:CM Seminar: Michael Foss-Feig\, Quantinuum
DESCRIPTION:Speaker: Michael Foss-Feig\, Quantinuum \nTime: 10:00-11:00am \nLocation: BRIM 311 \n  \nCM Seminars take place every Thursday morning at BRIM 311. More information about the talk and speaker becomes available closer to the event’s date—watch this space for more!
URL:https://qmi.miffanytark.com/event/cm-seminar-michael-foss-feig-quantinuum/
CATEGORIES:CM Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20250206T100000
DTEND;TZID=America/Vancouver:20250206T110000
DTSTAMP:20240903T220717Z
CREATED:20240903T220717Z
LAST-MODIFIED:20240903T220717Z
UID:8083-1738836000-1738839600@qmi.miffanytark.com
SUMMARY:CM Seminar: Direct Integration of 2D Materials for Next Generation Electronic Devices Zak Al Balushi\, University of California Berkeley
DESCRIPTION:Speaker: Zak Al Balushi\, University of California Berkeley \nTime: 10:00-11:00am \nLocation: BRIM 311 \nAbstract: Two-dimensional (2D) semiconductors\, such as molybdenum disulfide (MoS2)\, are emerging as key materials for next-generation electronics\, addressing challenges in the miniaturization of silicon-based technologies. Despite progress in scaling-up 2D materials\, integrating them into functional devices remains challenging\, particularly in the context of three-dimensional integration. In the first part of my talk\, I will present a scalable method for growing high-quality mono- to few-layer MoS2 on large wafers using a spin-on precursor\, molybdenum ethyl xanthate. This approach facilitates the formation of a metastable amorphous molybdenum trisulfide phase\, which we can then be leveraged for direct heterogeneous integration. We thoroughly investigate the growth dynamics and associated versatile features using comprehensive characterization\, reactive force-field molecular dynamics simulations\, and Density Functional Theory. Our method allows precise control over film thickness\, grain size\, and defect density\, yielding wafer-scale monolayer MoS2 with reliable optical properties comparable to as-exfoliated samples. Additionally\, we achieve area-selective formation of MoS2 and the direct deposition of sub-5 nm high-k oxides using atomic layer deposition\, without the need for seeding or surface functionalization. This process enables the fabrication of complex superlattice structures\, top-gated FETs\, and memristor devices\, all from a single-source chemistry. Our findings highlight the versatility of spin-on metal xanthate chemistries for the synthesis and integration of transition metal dichalcogenides (MoS2\, WS2\, NbS2\, ReS2\, etc.)\, paving the way for advanced nanoscale fabrication processes and enhancing the commercial viability of 2D materials in electronics. \nMoreover\, forming heavily doped regions in two-dimensional materials\, like graphene\, are a steppingstone to the design of emergent devices and heterostructures. In the second part of my talk\, I will present a selective-area approach to tune the work-function and carrier density in monolayer graphene by spatially synthesizing sub-monolayer gallium beneath the 2D-solid.  Localized metallic gallium is formed via precipitation from an underlying diamond-like carbon (DLC) film that was spatially implanted with gallium-ions. Controlling the interfacial precipitation process with annealing temperature allows for spatially precise ambipolar tuning of the graphene work-function that remains stable even in ambient conditions. Our theoretical studies corroborated the role of the gallium at the heterointerface on charge transfer and electrostatic doping of the graphene overlayer\, with charge carrier densities from ~ (hole-doped) to  (electron-doped) as measured by in-situ and ex-situ measurements. The extension of this doping scheme to other implantable elements into DLC provides a new means of exploring the physics and chemistry of highly doped overlayed two-dimensional materials. \nFinally\, metalorganic chemical vapor deposition (MOCVD) has become a pivotal technique for developing wafer-scale TMD 2D materials. If time permits\, I will discuss our recent findings on the impact of MOCVD growth conditions on achieving uniform and selective polymorph phase control of MoTe2 over large wafers. We demonstrated the controlled and uniform growth of few-layer MoTe2 in pure 2H\, 1T’\, and mixed-phases at various temperatures on up to 4-inch C-plane sapphire wafers with hexagonal boron nitride templates. At 600oC\, high-quality 2H-MoTe2 was obtained within a narrow temperature window\, verified with absorption and TEM analysis. In addition\, we observed strong exciton-phonon coupling effects in multiwavelength Raman spectroscopy when the excitation wavelength was in resonance with the C-exciton. Our findings indicate that temperature-induced Te vacancies play a crucial role in determining the MoTe2 phase. This study highlights the importance of precise control over the MOCVD growth temperature to engineer the MoTe2 phase of interest for device applications. \n\nAbout the speaker: Zak Al Balushi is an assistant professor in the department of Materials Science and Engineering at University of California\, Berkeley\, and a faculty scientist in the Materials Science Division at the Lawrence Berkeley National Laboratory. Zakaria received his B.S. (2011)\, M.S. (2012) in Engineering Science and his Ph.D. (2017) in Materials Science and Engineering all from The Pennsylvania State University. His early work focused on integration and fabrication of silicon nanowire devices\, then on the growth of group-III nitride semiconductors\, in situ metrology during MOCVD growth\, epitaxial graphene and the discovery and characterization of unconventional low-dimensional materials and heterostructures. Prior to his appointment at the University of California\, Berkeley\, he held two postdoctoral fellowships: the Resnick Prize Fellowship in Applied Physics and Materials Science and the NSF Alliances for Graduate Education and the Professoriate (AGEP) Fellowship both at the California Institute of Technology under the supervision of Professor Harry Atwater. At Caltech\, he focused on the synthesis and characterization of phase transformations in transition metal dichalcogenides 2D materials. At the University of California\, Berkeley\, his research group continues to expand in this area and beyond\, creating new synthesis and integration schemes for emerging low-dimensional materials. He is currently serving on the editorial board of Communications Materials\, is an elected executive committee member for the American Association for Crystal Growth and recently named “Four rising stars who are reshaping nanoscience” by Nature [Nature 608\, S12-S13 (2022)]. He is also a SK Hynix Faculty Fellow\, Society of Hellman Fellow\, a CIFAR Azrieli Global Scholar in Quantum Materials and a recipient of the NSF CAREER and Micron Corporation Early Career Awards in 2022.
URL:https://qmi.miffanytark.com/event/cm-seminar-zak-al-balushi-university-of-california-berkeley/
CATEGORIES:CM Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20250130T100000
DTEND;TZID=America/Vancouver:20250130T110000
DTSTAMP:20240903T220549Z
CREATED:20240903T220549Z
LAST-MODIFIED:20240903T220549Z
UID:8081-1738231200-1738234800@qmi.miffanytark.com
SUMMARY:CM Seminar: Connected Network Model for the Mechanical Loss of Amorphous Materials\, Steven Blaber\, UBC
DESCRIPTION:Speaker: Steven Blaber\, UBC \nTime: 10:00-11:00am \nLocation: BRIM 311 \nAbstract: For over 50 years\, the two-level system (TLS) model has stood as the prevailing description of thermal and acoustic properties of amorphous solids. Atomistic modeling shows that TLS are not independent as typically assumed\, but form a sparse\, interconnected network. I will discuss the mechanical loss in amorphous solids based on the nonequilibrium thermodynamics of connected networks\, providing a major advance beyond the quintessential two-level system model\, and revealing new avenues for the study amorphous materials. Amorphous mirror coatings with exceptionally low mechanical loss are critical components in the next generation of gravitational wave detectors. I will also briefly discuss how these results could impact the TLS model for dielectric loss in superconducting qubits. \n  \nCM Seminars take place every Thursday morning at BRIM 311. More information about the talk and speaker becomes available closer to the event’s date—watch this space for more!
URL:https://qmi.miffanytark.com/event/cm-seminar-clara-santato-polytechnique-montreal/
CATEGORIES:CM Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20250123T100000
DTEND;TZID=America/Vancouver:20250123T110000
DTSTAMP:20250115T234034Z
CREATED:20250115T234034Z
LAST-MODIFIED:20250115T234034Z
UID:8499-1737626400-1737630000@qmi.miffanytark.com
SUMMARY:CM Seminar: Just-in-time compiling Shor's algorithm with PennyLane and Catalyst\, Olivia Di Matteo\, UBC
DESCRIPTION:Speaker: Olivia Di Matteo\, UBC \nTime: 10:00-11:00am \nLocation: BRIM 311 \n\nAbstract: As quantum computing hardware continues to improve\, so must the tools we use to write quantum algorithms. There is a growing need for more expressive quantum programming languages that enable developers to write code at higher levels of abstraction than quantum circuits. This\, in turn\, necessitates robust and automated compilers that can generate optimized sequences of quantum operations in a scalable way. Such compilers are especially important for algorithms with many interdependent classical and quantum subroutines\, such as Shor’s factoring algorithm. \nIn this talk I will provide a pedagogical introduction to Shor’s algorithm by presenting its implementation at varying levels of abstraction. While its high-level subroutines are straightforward to express\, compilation and optimization incurs a large overhead due to the algorithm’s randomized nature. To that end\, I will highlight on-going work on a fully just-in-time-compiled implementation using PennyLane and Catalyst. I’ll discuss its scaling\, practical resource requirements\, implementation tricks (and unique quirks)\, and the feasibility of executing it on near-term hardware.
URL:https://qmi.miffanytark.com/event/just-in-time-compiling-shors-algorithm-with-pennylane-and-catalyst/
CATEGORIES:CM Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20250109T100000
DTEND;TZID=America/Vancouver:20250109T110000
DTSTAMP:20240903T220310Z
CREATED:20240903T220310Z
LAST-MODIFIED:20240903T220310Z
UID:8077-1736416800-1736420400@qmi.miffanytark.com
SUMMARY:CM Seminar: How nonlinearity distorts the evidence for photoinduced superconductivity\, J. Steven Dodge\, SFU
DESCRIPTION:Speaker: J. Steven Dodge\, SFU \nAbstract: How nonlinearity distorts the evidence for photoinduced superconductivity \nTime: 10:00-11:00am \nLocation: BRIM 311 \nAbstract: Over a decade of research has suggested that some metallic compounds can be transformed into superconductors by illuminating them with intense beams of laser light. Recently\, we have shown that the experimental evidence for this effect could literally be an optical illusion produced by the high-intensity laser illumination. By examining several influential results on photoinduced superconductivity in K3C60\, we have identified a fundamental flaw in their analysis that exaggerates the apparent photoinduced changes to the conductivity. When we account for this error\, we find evidence that photoexcitation produces a moderate enhancement of the conductivity\, but that there is no need to appeal to a photoinduced phase transition to a superconducting state. Subsequent work on K3C60 has provided quantitative support for our analysis. After discussing our reanalysis of experiments on K3C60\, I will describe how this error also distorts the evidence for photoinduced superconductivity in the normal state of cuprate superconductors and in the charge-transfer salt BEDT-TTF. Finally\, I will discuss how our reinterpretation raises new and interesting questions about the interaction of light with matter. \n 
URL:https://qmi.miffanytark.com/event/cm-seminar-j-steven-dodge-sfu/
CATEGORIES:CM Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20241212T100000
DTEND;TZID=America/Vancouver:20241212T230000
DTSTAMP:20240903T215551Z
CREATED:20240903T215551Z
LAST-MODIFIED:20240903T215551Z
UID:8075-1733997600-1734044400@qmi.miffanytark.com
SUMMARY:CM Seminar: Sebastian ten Haa\, Majorana bound states in artificial Kitaev chains\, Delft University of Technology
DESCRIPTION:Speaker: Sebastian ten Haaf\, Delft University of Technology \nTime: 10:00-11:00am \nLocation: BRIM 311 \n  \nTitle: “Majorana bound states in artificial Kitaev chains” \nAbstract: “The Kitaev chain model predicts the ability to engineer localized Majorana bound states: non-Abelian zero-energy excitations that are protected from local perturbations\, which can be utilized for realizing robust quantum computation schemes. Recent work on InSb nanowires demonstrated that the ingredients for a minimal Kitaev chain\, consisting of two sites\, can be engineered by coupling quantum dots (QDs) via two second-order processes: crossed Andreev reflection and elastic co-tunnelling. To open up the path to more complex experiments\, we implemented this system in a two-dimensional electron gas (2DEG). In this talk\, I will detail the theoretical background and our experimental implementation of the Kitaev chain in the InSbAs 2DEG platform. I will highlight recent results obtained on a chain consisting of three quantum dots\, where we find that the presence of zero energy modes on the outer QDs is correlated with a bulk excitation gap in the middle QD\, demonstrating key properties of the Kitaev chain.”
URL:https://qmi.miffanytark.com/event/cm-seminar-srijit-goswami-delft-university-of-technology/
CATEGORIES:CM Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20241205T100000
DTEND;TZID=America/Vancouver:20241205T110000
DTSTAMP:20240903T215433Z
CREATED:20240903T215433Z
LAST-MODIFIED:20240903T215433Z
UID:8073-1733392800-1733396400@qmi.miffanytark.com
SUMMARY:CM Seminar: Shuyun Zhou\, Tsinghua University
DESCRIPTION:Speaker: Shuyun Zhou\, Tsinghua University \nTime: 10:00-11:00am \nLocation: BRIM 311 \n  \nCM Seminars take place every Thursday morning at BRIM 311. More information about the talk and speaker becomes available closer to the event’s date—watch this space for more!
URL:https://qmi.miffanytark.com/event/cm-seminar-shuyun-zhou-tsinghua-university/
CATEGORIES:CM Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20241128T100000
DTEND;TZID=America/Vancouver:20241128T110000
DTSTAMP:20240903T220429Z
CREATED:20240903T220429Z
LAST-MODIFIED:20240903T220429Z
UID:8079-1732788000-1732791600@qmi.miffanytark.com
SUMMARY:CM Seminar: Measurement induced criticality in monitored quantum systems\, Ehud Altman\, University of California\, Berkeley
DESCRIPTION:Speaker: Ehud Altman\, University of California\, Berkeley \nTime: 10:00-11:00am \nLocation: BRIM 311 \nTitle: Measurement induced criticality in monitored quantum systems \nAbstract: A novel aspect of recent experiments with quantum devices is that measurements can play an active role in preparing the state of the system\, not just in diagnosing it. Unlike unitary evolution\, the quantum collapse induced by local measurements can have a highly non-local impact on entangled quantum states\, instantaneously destroying or creating new long distance correlations. I will review the surprising collective effects that can arise\, such as measurement induced phase transitions and new entanglement structures.  There is\, however\, a fundamental challenge to observing post-measurement correlations\, conditioned on the outcome of many-measurements with exponentially small Born probability of recurring. I will discuss how to resolve this post-selection problem by cross-correlating experimental data with results of an approximate classical model. This allows us to reframe the measurement induced transition as a transition in the ability of a classical intelligent agent to learn the quantum state.  \n 
URL:https://qmi.miffanytark.com/event/cm-seminar-ehud-altman-university-of-california-berkeley/
CATEGORIES:CM Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20241121T100000
DTEND;TZID=America/Vancouver:20241121T110000
DTSTAMP:20241105T212444Z
CREATED:20241105T212444Z
LAST-MODIFIED:20241105T212444Z
UID:8217-1732183200-1732186800@qmi.miffanytark.com
SUMMARY:CM Seminar: Topological qubits from fractional quantum spin Hall states\, Drew Potter\, UBC
DESCRIPTION:Speaker: Drew Potter\, UBC \nTime: 10:00-11:00am \nLocation: BRIM 311 \nTitle: Topological qubits from fractional quantum spin Hall states  \nAbstract: The recent experiments have shown evidence for a fractional quantum spin Hall (FQSH) state in twisted MoTe2 bilayers. In this talk I will review these experiments\, survey some theoretical scenarios for candidate abelian and non-abelian FQSH orders. I will also describe a possible route towards building a topological quantum memory by interfacing FQSH states with superconductors\, and propose an all-electrical scheme to detect their topological ground-space degeneracy.
URL:https://qmi.miffanytark.com/event/cm-seminar-topological-qubits-from-fractional-quantum-spin-hall-states-drew-potter-ubc/
CATEGORIES:CM Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20241031T100000
DTEND;TZID=America/Vancouver:20241031T110000
DTSTAMP:20240903T215321Z
CREATED:20240903T215321Z
LAST-MODIFIED:20240903T215321Z
UID:8071-1730368800-1730372400@qmi.miffanytark.com
SUMMARY:CM Seminar: Efficient microwave-optical conversion mediated by color centers in silicon\, Mohammad Khalifa\, UBC
DESCRIPTION:Speaker: Mohammad Khalifa\, UBC \nTime: 10:00-11:00am \nLocation: BRIM 311 \nAbstract: Quantum networks are expected to boost the quantum technology by enabling distributed quantum computing and quantum communication. A coherent converter between microwave and optical photons could enable the creation of these quantum networks where quantum information is locally processed in the microwave regime and distributed by optical photons. I will talk about the general requirements and challenges of building a microwave-optical converter with high conversion efficiency. Then\, I will introduce our proposed magneto-optic converter\, which is based on the effective nonlinearity of an ensemble of spin-bearing color centers implanted in silicon photonic resonator and coupled to a superconducting cavity. I will discuss the physics of the system and how it can be engineered to achieve near-unity conversion efficiency.
URL:https://qmi.miffanytark.com/event/cm-seminar-mohammad-khalifa-ubc/
CATEGORIES:CM Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20241024T100000
DTEND;TZID=America/Vancouver:20241024T110000
DTSTAMP:20241013T232106Z
CREATED:20241013T232106Z
LAST-MODIFIED:20241013T232106Z
UID:8211-1729764000-1729767600@qmi.miffanytark.com
SUMMARY:CM Seminar: Advanced LIGO: building a new window to the universe with quantum matter\, Jess McIver\, UBC.
DESCRIPTION:Speaker: Jess McIver\, UBC. \nTime: 10:00-11:00am \nLocation: BRIM 311 \nAbstract: Have you ever wondered how the Advanced LIGO detectors can sense relative displacements more than 1\,000 times smaller than the width of a proton? This unprecedented sensitivity is enabled in part by thin film technology! In this talk\, we’ll tour the Advanced LIGO detectors to get a sense for how we can detect gravitational waves with laser interferometers. We’ll summarize the performance of today’s gravitational-wave detectors and what we’ve learned about the Universe with gravitational waves so far. Finally\, we’ll discuss the pivotal role of material science advances in developing future gravitational-wave detectors and unlocking the invisible Universe.
URL:https://qmi.miffanytark.com/event/cm-seminar-advanced-ligo-building-a-new-window-to-the-universe-with-quantum-matter-jess-mciver-ubc/
CATEGORIES:CM Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20241017T100000
DTEND;TZID=America/Vancouver:20241017T110000
DTSTAMP:20240903T215136Z
CREATED:20240903T215136Z
LAST-MODIFIED:20240903T215136Z
UID:8069-1729159200-1729162800@qmi.miffanytark.com
SUMMARY:CM Seminar: Quantum Sensation: a journey through arts and quantum physics\, Catherine Deletoille\, Quantum Studio
DESCRIPTION:Speaker: Catherine Deletoille\, Quantum Studio Artist from Paris\, France   \nTime: 10:00-11:00am \nLocation: BRIM 311 \nTitle: Quantum Sensation: a journey through arts and quantum physics \nAbstract: After a presentation of her artistic path and research\, the painter Caroline Delétoille will share some insights about the “quantum sensation” art-science project embedded at the core of her upcoming residency. This research-creation based exhibition has been developed since the end of 2023 in close collaboration with a physicist and a philosopher. Its artistic creation and exploration will continue during the residency at the QMI laboratories.
URL:https://qmi.miffanytark.com/event/cm-seminar-catherine-deletoille/
CATEGORIES:CM Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20241010T100000
DTEND;TZID=America/Vancouver:20241010T110000
DTSTAMP:20240917T154327Z
CREATED:20240917T154327Z
LAST-MODIFIED:20240917T154327Z
UID:8143-1728554400-1728558000@qmi.miffanytark.com
SUMMARY:CM Seminar: Atomic Cluster Expansion for "Learning" Many-Body Interaction\, Christoph Ortner\, UBC
DESCRIPTION:Speaker: Christoph Ortner\, UBC. \nTime: 10:00-11:00am \nLocation: BRIM 311 \nTitle: Atomic Cluster Expansion for “Learning” Many-Body Interaction \nAbstract: The integration of machine learning (ML) into the traditional modeling workflows is replacing decades-old – often ad hoc – approximations (e.g.\, in constitutive laws) leading to new models that far outstrip their predecessors in accuracy and transferability. ”Pure” ML approaches are rarely successful but remarkable results can be achieved when integrated with domain knowledge. I will introduce a general formalism\, the Atomic Cluster Expansion\, for parameterizing many-body interaction and how it can be used for reduced-order modelling. Examples are taken from interatomic potentials\, coarse-grained MD\, and VMC.
URL:https://qmi.miffanytark.com/event/cm-seminar-atomic-cluster-expansion-for-learning-many-body-interaction-christoph-ortner-ubc/
CATEGORIES:CM Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20241003T100000
DTEND;TZID=America/Vancouver:20241003T110000
DTSTAMP:20240903T214840Z
CREATED:20240903T214840Z
LAST-MODIFIED:20240903T214840Z
UID:8066-1727949600-1727953200@qmi.miffanytark.com
SUMMARY:CM Seminar: Rogerio de Sousa\, University of Victoria
DESCRIPTION:Speaker: Rogerio de Sousa\, University of Victoria \nTime: 10:00-11:00am \nLocation: BRIM 311 \n  \nCM Seminars take place every Thursday morning at BRIM 311. More information about the talk and speaker becomes available closer to the event’s date—watch this space for more!
URL:https://qmi.miffanytark.com/event/cm-seminar-rogerio-de-sousa-university-of-victoria/
CATEGORIES:CM Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20240926T100000
DTEND;TZID=America/Vancouver:20240926T110000
DTSTAMP:20240903T214733Z
CREATED:20240903T214733Z
LAST-MODIFIED:20240903T214733Z
UID:8063-1727344800-1727348400@qmi.miffanytark.com
SUMMARY:CM Seminar:  Impact of Josephson junction materials on the performance of superconducting qubits\, Josh Mutus\, Rigetti Computing
DESCRIPTION:Speaker: Josh Mutus\, Rigetti Computing \nTime: 10:00-11:00am \nLocation: BRIM 311 \nTitle: Impact of Josephson junction materials on the performance of superconducting qubits \nAbstract: Superconducting qubits are a leading modality for quantum computing\, offering a favorable balance between coherence\, gate times\, scalability\, and fidelity. I will explore the interplay between materials science and qubit performance\, with a particular focus on how the materials used in Josephson junctions (JJs) affect qubit behavior. The frequency of a qubit is largely determined by the properties of JJs\, which typically consist of amorphous oxide tunnel barriers. These barriers are also the likely location of most two-level systems (TLS) defects. Recently\, we discovered an Alternating-Bias Assisted Annealing (ABAA) process that enables us to fine-tune JJs to achieve the desired frequency. Characterizing these ABAA post-processed JJs provides insight into the structural and chemical bonding uniformity of the amorphous oxides after ABAA processing\, as well as the impact on qubit performance and TLS density.
URL:https://qmi.miffanytark.com/event/cm-seminar-josh-mutus-rigetti-computing/
CATEGORIES:CM Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20240919T100000
DTEND;TZID=America/Vancouver:20240919T110000
DTSTAMP:20240903T214247Z
CREATED:20240903T214247Z
LAST-MODIFIED:20240903T214247Z
UID:8060-1726740000-1726743600@qmi.miffanytark.com
SUMMARY:CM Seminar: Quantum Anomalous Hall Effects in Rhombohedral Graphene Moiré Structures \, Adarsh Patri\, UBC
DESCRIPTION:Speaker: Adarsh Patri\, UBC. \nTime: 10:00-11:00am \nLocation: BRIM 311 \nTitle: Quantum Anomalous Hall Effects in Rhombohedral Graphene Moiré Structures  \nAbstract: A recent series of experiments in two-dimensional moiré materials have discovered the physics of quantum Hall effect in the absence of an external magnetic field. These so-called “(Integer/Fractional) Quantum Anomalous Hall” phases have been observed in twisted transition metal dichalcogenide MoTe2 moiré heterostructure\, as well as more recently in pentalayer rhombohedral graphene aligned with a hexagonal Boron-Nitride (hBN) substrate. Unlike the standard theoretical framework of the quantum Hall effect\, where one has a flat band at the single-particle level\, these discoveries provide a fertile ground for exploring the minimal conditions that are required to realize and stabilize such exotic phases of matter. In this talk\, I will examine the microscopic origin of both the integer and fractional QAH phases in N-layer graphene aligned with hBN through a combination of Hartree-Fock methods and Exact Diagonalization. I will also discuss the delicate role of the moiré superlattice potential in determining the ultimate ground state in strongly-correlated two-dimensional moiré materials. Time-permitting\, I will also briefly touch on the phenomenology of the recently observed extended quantum anomalous Hall effect in pentalayer graphene aligned with hBN. \nBio: Adarsh completed his undergraduate degree at the University of Waterloo\, and his PhD at the University of Toronto under the supervision of Yong-Baek Kim in 2021. He was a postdoctoral research associate from 2021—2024 at the Massachusetts Institute of Technology working with Senthil Todadri.
URL:https://qmi.miffanytark.com/event/cm-seminar-adarash-patri-ubc/
CATEGORIES:CM Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20240912T100000
DTEND;TZID=America/Vancouver:20240912T110000
DTSTAMP:20240829T221720Z
CREATED:20240829T221720Z
LAST-MODIFIED:20240829T221720Z
UID:8011-1726135200-1726138800@qmi.miffanytark.com
SUMMARY:CM Seminar: Ziliang Ye\, Sliding Ferroelectricity in Rhombohedral MoS2: A New Approach to Nonvolatilely Switch the Interaction between Light and Matter
DESCRIPTION:Location: BRIM 311 \nTime: 10:00 AM – 11:00 AM \nAbstract: The tunability in the stacking of layered materials with van der Waals bonding provides a new and powerful approach to engineer their physical properties. Sliding ferroelectricity is one such example where an electric field drives one layer of materials to move relative to its neighbours due to an out-of-plane electric polarization arising from interlayer coupling. Sliding ferroelectricity can therefore occur in traditionally non-ferroelectric materials and has been observed in artificially stacked boron nitrides and transition metal dichalcogenides (TMDs). In this talk\, I will show that such a hysteric phenomenon can occur in chemically synthesized rhombohedral molybdenum disulfide (3R-MoS2) crystals with pre-existing domain walls. I will first discuss our studies on domain characterization using photocurrent and scanning probe microscopy. I will then show that these polarization domains and their switching behavior can be probed by optical spectroscopy\, revealing the existence of a variety of switching pathways. Due to their strong excitonic effects and sliding ferroelectricity\, rhombohedral TMDs can be built into nonvolatile optical memories with high performances. \nSpeaker: Ziliang Ye\, Associate Professor and Principal Investigator\, Stewart Blusson Quantum Matter Institute
URL:https://qmi.miffanytark.com/event/cm-seminar-ziliang-ye-ferroelectric-switching-of-light-matter-interactions-in-rhombohedral-mos2/
CATEGORIES:CM Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20240905T100000
DTEND;TZID=America/Vancouver:20240905T100000
DTSTAMP:20240829T193256Z
CREATED:20240829T193256Z
LAST-MODIFIED:20240829T193256Z
UID:8002-1725530400-1725530400@qmi.miffanytark.com
SUMMARY:CM Seminar: Quantum Skyrmion Hall Effect\, Ashley Cook
DESCRIPTION:Time: 10:00 AM – 11:00 AM \nLocation: BRIM 311 \nAbstract: A great variety of topological phases have been classified as a consequence of discovery of the quantum Hall effect\, but this work has recently led to discovery of some topologically non-trivial phases of matter\, which contradict key assumptions of established classification schemes. These phases\, which are the topological skyrmion phases of matter\, multiplicative topological phases of matter\, and finite-size topological phases of matter\, necessitate a paradigm shift from the quantum Hall effect framework to that of the quantum skyrmion Hall effect\, in which the point charges of the quantum Hall effect are generalised to compactified p-branes. For compactification via fuzzification\, these compactified p-branes carrying charge are necessarily expressed in terms of angular momentum as quantum skyrmions. Ostensibly (d+1)-dimensional systems\, based on the number of Cartesian coordinates they possess\, can then in fact have D additional dimensions encoded in (pseudo)spin degrees of freedom\, and realize intrinsically (D+d+1)-dimensional topological states\, a finding supported by results in lattice tight-binding models. \nBio: Ashley Cook\, Group Leader\, Max Planck\, Dresden \n 
URL:https://qmi.miffanytark.com/event/cm-seminar-ashley-cook/
CATEGORIES:CM Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20240328T100000
DTEND;TZID=America/Vancouver:20240328T110000
DTSTAMP:20240325T203553Z
CREATED:20240325T203553Z
LAST-MODIFIED:20240325T203553Z
UID:7248-1711620000-1711623600@qmi.miffanytark.com
SUMMARY:CM Seminar: John Sous – University of California San Diego: Principles for phonon-driven energy solutions in functional electronic materials
DESCRIPTION:CM Seminar: John Sous – University of California San Diego\nTitle: Principles for phonon-driven energy solutions in functional electronic materials \nAbstract: Functional electronic materials are compounds in which correlations amongst electrons and between electrons and ionic vibrations (phonons) give rise to promising new functionalities poised to revolutionize energy conversion\, storage and sustainability. In this talk\, I will present principles – that extend the textbook understanding of electron-phonon coupling –  for the design of phonon-driven pathways to electronic materials with energy capabilities\, thereby opening a door to new advancements in the materials and energy sciences. I will discuss three examples: 1. Energy conversion in so-called polaronic crystals such as the organic oligo-acene molecules\, where I will show that the concept of a polaron becomes very quickly ill-defined as temperature increases from zero\, implying that energy absorption and conversion cannot be understood in terms of quasiparticle transport\, with ramifications to emerging solar cell technologies. 2. Energy storage in nanoscale materials whose phonons are initially excited by a light pulse\, where I will show that the excited phonons relax by releasing their excess energy into the electrons\, reshaping their correlations to form novel excited-state non-equilibrium phases such as the light-induced conversion of metals into disordered insulators and (near) superconductors which appear to be immune to thermalization on long timescales\, thus serving as new mediums for protected energy storage and utilization. 3. Energy sustainability from vibrationally coupled electrons in multiorbital electronic materials\, where I will show that phonons mediate superfluidity of light-mass\, small-size bipolarons with a critical transition temperature Tc whose value vastly surpasses widely assumed empirical upper bounds and which I am currently investigating in a number of emerging materials such as the newly synthesized organic terphenyl-based compounds\, SrTiO3\, LiTi2O4\, as well as twisted bilayer graphene moire heterostructures. I will conclude by providing an overview of my future plans. \nSpeaker Bio: John Sous is an Assistant Professor at the University of California\, San Diego (UCSD).  Prior to that he was a Gordon & Betty Moore Postdoctoral Fellow at Stanford University (2022 – 2023)\, before which he was a Materials Research Science and Engineering Center (MRSEC) Postdoctoral Fellow at Columbia University (2019 – 2022). He obtained a Ph.D. in Physics from the University of British Columbia (UBC) in 2019 and a M.Sc. in Chemical Physics from the University of Waterloo in 2013. His research focuses on the study of materials in which quantum correlations act to stabilize novel electronic states of matter with functionalities which can be useful in applied research\, such as energy applications. \n  \n 
URL:https://qmi.miffanytark.com/event/cm-seminar-john-sous-university-of-california-san-diego-principles-for-phonon-driven-energy-solutions-in-functional-electronic-materials/
CATEGORIES:CM Seminar
ORGANIZER;CN="Aditi Adhikari":MAILTO:aditi.adhikari@ubc.ca
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20240321T100000
DTEND;TZID=America/Vancouver:20240321T110000
DTSTAMP:20240214T191126Z
CREATED:20240214T191126Z
LAST-MODIFIED:20240214T191126Z
UID:7089-1711015200-1711018800@qmi.miffanytark.com
SUMMARY:CM Seminar: Janez Bonca – University of Ljubljana: Equilibrium and far-from-equilibrium properties of bipolaron coupled to dispersive phonons
DESCRIPTION:CM Seminar: Janez Bonca – University of Ljubljana\nTitle: Equilibrium and far-from-equilibrium properties of bipolaron coupled to  dispersive phonons \nAbstract: In the first part of my talk\, I will discuss  a Holstein-like model with two electrons nonlinearly coupled to quantum phonons. Using an efficient method based on full quantum approach [1-4] we  simulate the dynamical response of a system subject to a short spatially uniform optical pulse that couples to dipole-active vibrational modes. Nonlinear electron-phonon coupling can either soften or strengthen the phonon frequency in the presence of electron density [5]. When two electrons are free to propagate on a lattice subject to non-linear coupling to phonons that soften phonon frequency\, an external optical pulse with well tuned frequency can induce attraction between electrons. Electrons remain bound long after the optical pulse is switched off. Changing the frequency of the pulse the attractive electron–electron interaction can be switched to repulsive. Two sequential optical pulses with different frequencies can switch between attractive and repulsive interaction [6]. \nIn the second part\, I will discuss the phase diagram of the bipolaron in the Holstein – Hubbard model in the presence of dispersive phonons. We show that a finite dispersion can stabilize a bound bipolaron even at large Coulomb repulsion U [7]. The sign of the curvature of the optical phonon dispersion plays a decisive role on the bipolaron binding energy and the effective mass in the presence of  U. Finally\, I will discuss the influence of U on the ARPES spectral function of the bipolaron. \nSpeaker Bio: Janez Bonca is a Professor and Dean of the Faculty of Mathematics and Physics at the University of Ljubljana\, Slovenia.  His research interests include theory of incommensurate systems\, theory of strongly correlated systems and high temperature superconductors\, theory of heavy fermion systems\, theory of mesoscopic systems and quantum dots\, theory of frustrated spin systems\, physics of electron – phonon interaction and theory of polarons and bipolarons\, study of systems driven far from equilibrium\, thermalization in many-body systems\, theory of many-body localization. Prof. Bonca completed his PhD from the University of Ljubljana\, and worked as a Post-doctoral Associate at  Los Alamos National Laboratory from 1992-1995. \n 
URL:https://qmi.miffanytark.com/event/cm-seminar-janez-bonca-university-of-ljubljana-equilibrium-and-far-from-equilibrium-properties-of-bipolaron-coupled-to-dispersive-phonons/
CATEGORIES:CM Seminar
ORGANIZER;CN="Aditi Adhikari":MAILTO:aditi.adhikari@ubc.ca
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20240314T100000
DTEND;TZID=America/Vancouver:20240314T110000
DTSTAMP:20240228T194842Z
CREATED:20240228T194842Z
LAST-MODIFIED:20240228T194842Z
UID:7121-1710410400-1710414000@qmi.miffanytark.com
SUMMARY:CM Seminar: Kamran Kamiri – National Centre for Nuclear Research\, Poland: Multiscale Modeling of Mechanical Deformation in Chemically Complex Alloys
DESCRIPTION:Kamran Kamiri – National Centre for Nuclear Research\, Poland\nTitle: Multiscale Modeling of Mechanical Deformation in Chemically Complex Alloys \nAbstract: In my presentation\, I will give an overview of three primary areas that have been my focal research interests at NOMATEN CoE: i) crystal and amorphous plasticity\, ii) transport properties of high-entropy alloys (HEAs)\, and iii) micro-structural informatics. In i)\, my research has employed statistical physics to unravel the microscopic basis of plasticity based on the collective dynamics of shear transformation zones in amorphous solids as well as dislocations mechanics in crystalline metals. Within the context of HEAs\, my focus has been on the role of chemical complexities (i.e. local disorder/ordering) investigating their impact on alloy strengths. In ii)\, I have explored the sluggish diffusion of defects in HEAs and its impact on thermo-mechanical properties. In the area of micro-structural informatics in iii)\, I have utilized the power of machine learning (ML) and graph neural networks GNNs to infer (hardness) properties solely based on the (surface) microstructural information. Building upon these achievements\, we are currently expanding the scope of the above studies by i) employing ML to identify relevant microstructural metrics for predicting bulk plastic properties in bulk metallic glasses as well as HEAs within the microstructure-property paradigm\, ii) utilizing machine-learned interatomic potentials for accelerated material discovery\, and iii) extending the GNN’s capabilities to infer microstructural signatures and defects based on micro/nano mechanical response (as input data) in different metallic systems and distinct alloy compositions. \nSpeaker Bio: Kamran Karimi is a computational materials physicist working at the National Centre for Nuclear Research\, Otwock Poland. \n 
URL:https://qmi.miffanytark.com/event/cm-seminar-kamran-kamiri-national-centre-for-nuclear-research-poland-multiscale-modeling-of-mechanical-deformation-in-chemically-complex-alloys/
CATEGORIES:CM Seminar
ORGANIZER;CN="Aditi Adhikari":MAILTO:aditi.adhikari@ubc.ca
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20240229T100000
DTEND;TZID=America/Vancouver:20240229T110000
DTSTAMP:20240214T190047Z
CREATED:20240214T190047Z
LAST-MODIFIED:20240214T190047Z
UID:7086-1709200800-1709204400@qmi.miffanytark.com
SUMMARY:CM Seminar: Ania Bleszynski Jayich – University of California Santa Barbara: Quantum sensing in the solid-state: from one spin to many spins
DESCRIPTION:CM Seminar: Ania Bleszynski Jayich – University of California Santa Barbara\nTitle: Quantum sensing in the solid-state: from one spin to many spins \nAbstract: Sensors that leverage quantum phenomena to measure physical quantities harbor many attractive features beyond classical sensors. Solid-state quantum sensors\, with the nitrogen-vacancy (NV) center in diamond a forefront technology\, are particularly attractive for their compatibility with biological and condensed matter systems\, offering ultra-high spatial resolution and sensitivity over a wide temperature range\, while being quantitative and non-invasive. Here I first present our group’s work on NV-center-based scanned probe imaging of electron flow patterns in graphene\, revealing the presence of hydrodynamic electron flow. A frontier of quantum sensing is the utilization of entangled quantum sensors for metrological advantage\, a goal not yet realized in the solid-state. I also discuss our group’s progress towards realizing novel many-body states of entangled spins\, both diamond-based qubits and novel chemically-assembled molecular spin systems. \nSpeaker Bio: Ania Bleszynski Jayich is a professor of physics at the University of California Santa Barbara\, where she holds the Bruker Endowed Chair for Science and Engineering\, the Elings Endowed Chair for Quantum Science\, and is co-director of the Quantum Foundry\, an NSF Q-AMASE-I center. Her research interests include quantum assisted sensing and imaging on the nanoscale\, spin-coupled optomechanics\, and hybrid quantum systems for sensing and quantum information. Before coming to UCSB\, Ania was a postdoctoral researcher at Yale University\, and received her PhD in physics from Harvard in 2006 and a B.S. in physics and mathematical and computational science from Stanford in 2000. \n 
URL:https://qmi.miffanytark.com/event/cm-seminar-ania-bleszynski-jayich-university-of-california-santa-barbara-quantum-sensing-in-the-solid-state-from-one-spin-to-many-spins/
CATEGORIES:CM Seminar
ORGANIZER;CN="Aditi Adhikari":MAILTO:aditi.adhikari@ubc.ca
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20240215T100000
DTEND;TZID=America/Vancouver:20240215T110000
DTSTAMP:20240123T175412Z
CREATED:20240123T175412Z
LAST-MODIFIED:20240123T175412Z
UID:6853-1707991200-1707994800@qmi.miffanytark.com
SUMMARY:CM Seminar: James Analytis – UC Berkley: Frustrated Quantum Devices: understanding how correlations\, complex order and boundary states manifest in novel material functionalities
DESCRIPTION:CM Seminar: James Analytis – UC Berkley \nTitle: Frustrated Quantum Devices: understanding how correlations\, complex order and boundary states manifest in novel material functionalities \nAbstract: Materials at the boundary of critical phase transitions are of significant fundamental interest\, not least due because of their connection to unconventional superconductivity and quantum magnetism. One characteristic of such systems is the presence of coupled order parameters that underlie these phase transitions. Here\, we explore how this coupling manifests in the response of these materials when driven out of equilibrium by applied currents. We demonstrate how magnetic and charge textures can be electrically manipulated\, suggesting possible applications for exotic materials in spintronics technologies. \n 
URL:https://qmi.miffanytark.com/event/cm-seminar-james-analytis-uc-berkley-frustrated-quantum-devices-understanding-how-correlations-complex-order-and-boundary-states-manifest-in-novel-material-functionalities/
CATEGORIES:CM Seminar
ORGANIZER;CN="Aditi Adhikari":MAILTO:aditi.adhikari@ubc.ca
END:VEVENT
END:VCALENDAR