Events

SBQMI hosts numerous academic and other events throughout the year. Please search by audience or event type, or enter a keyword, to find events of interest to you.

If you are interested in inviting our faculty as keynote speakers at your event, or are a school group interested in visiting our labs, please contact us to submit your request.

  • Workshop

CM Seminar - Obstacles to variational quantum simulation and optimization

21 Nov2019

Speaker: Sergey Bravyi

Time: November 21, 2019 :: 2:00PM - 3:00PM

Location: Brimacombe 311

Abstract Variational quantum algorithms such as VQE or QAOA aim at simulating low-energy properties of quantum many-body systems or finding approximate solutions of combinatorial optimization problems. Such algorithms, designed for near-term quantum processors, employ variational states based on low-depth quantum circuits to minimize the expected energy of a Hamiltonian describing the system of interest. Given the current enthusiasm for...

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  • Public
  • Seminar

Seminar: Spectroscopic investigation of UFe2Si2, URu2Si2, UNi2Si2, and UPd2Si2

15 Nov2019

Speaker: Andrea Severing, University of Cologne

Time: Nov 15, 2019 :: 10:00 AM - 12:00 PM

Location: BRIM 311

We have carried out hard x-ray photoelectron spectroscopy (HAXPES) measurements at the U 4f core level and non-resonant inelastic x-ray scattering (NIXS) at the U O4,5 edges of UT2Si2 compounds that all form in the tetragonal ThCr2Si2 structure but exhibit different ground state properties: UFe2Si2 is a Pauli paramagnet; URu2Si2 is the famous hidden order compound of which the order...

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  • Seminar

CM Seminar - Direct Imaging of Orbitals in Quantum Materials

14 Nov2019

Speaker: Hao Tjeng

Time: November 14, 2019 :: 2:00PM - 3:00PM

Location: Hennings 318

The search for new quantum materials with novel properties is often focused on materials containing transition-metal, rare-earth and/or actinide elements. The presence of the atomic-like d or f orbitals provides a fruitful playground to generate novel phenomena. The intricate interplay of band formation with the local electron correlation and atomic multiplet effects leads to phases that are...

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CM Seminar - Unconventional magnetism and quantum disorder in NaYbO2

07 Nov2019

Speaker: Stephen Wilson

Time: November 7, 2019 :: 2:00PM - 3:00PM

Location: Brimacombe 311

Abstract: The triangular lattice of antiferromagetically coupled spins has long served as the paradigm of geometric magnetic frustration. An accompanying host of unconventional magnetic ground states predicted in this setting, and, as the spins on the lattice approach the quantum limit, these range from predictions of quantum spin liquid phases to unusual regimes of fluctuation-driven order. While ideal manifestations of...

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CM Seminar - Linear and nonlinear optical responses in chiral topological semimetals

31 Oct2019

Speaker: Liang Wu

Time: October 31, 2019 :: 2:00PM - 3:00PM

Location: Brimacombe 311

Abstract: The fundamental difference between electrons in a solid and those in high-energy physics is the absence of Poincare symmetry in lattice systems. This gives rise to a much larger number of possible low energy excitations (known as multi-fold fermions) in solid-state physics. Recent theory and experiments show that semimetals with multi-fold degenerate points could exist in nonmagnetic materials...

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  • Seminar

CM Seminar - Current Transport Properties and Phase Diagram of a Kitaev Chain with Long-Range Pairing

29 Oct2019

Speaker: Domenico Giuliano

Time: October 29, 2019 :: 2:00PM - 3:00PM

Location: Brimacombe 311

Abstract: We describe a method to probe the quantum phase transition between the short-range and the long-range topological phase in the superconducting Kitaev chain with long-range pairing. We show that, when the leads are biased at a voltage V, the Fano factor is either zero or 2e. As a result, we find that the Fano factor works as a...

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  • Public
  • Seminar

CM Seminar : Tunneling Probe of 2D Magnetism

24 Oct2019

Speaker: Adam Tsen

Time: October 24, 2019 :: 2:00PM - 3:00PM

Location: BRIM 311

The recent discoveries of ferromagnetism in single atomic layers have opened a new avenue for two-dimensional (2D) materials research. Not only do they raise fundamental questions regarding the requirements for long-range magnetic order in low-dimensional systems, but they also provide a new platform for the development of spintronic devices. In this talk, I will present a series of studies on...

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CM Seminar - Topological valleytronics in bilayer graphene

10 Oct2019

Speaker: Jun Zhu, Penn State University

Time: October 10, 2019 :: 2:00PM - 3:00PM

Location: BRIM 311

Abstract : The advent of two-dimensional materials with hexagonal crystal symmetry offers a new electronic degree of freedom, namely valley, the manipulation and detection of which could potentially be exploited to form new many-body ground states as well as new paradigms of electronic applications. In this talk, I will describe how we create valley-momentum locked topological 1D channels, aka...

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CM Seminar - High field superconducting magnet science for particle and condensed matter physics

26 Sep2019

Speaker: Lance Cooley

Time: Sep 26 2019 :: 2:00PM - 3:00PM

Location: BRIM 311

Abstract : Magnets are unarguably the "killer app" of superconductivity, with medical imaging magnets comprising an annual $2 billion market that consumes about 1000 tons of superconductor per year, and magnets for large science projects contributing a similar share. Yet, no magnet is ever better than the conductors from which it is wound, making the frontier of magnet technology inseparably...

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  • Seminar

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