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.

CM seminar - Probing and Tuning Interlayer Interactions to Control Electronic and Photonic Properties of 2D Heterostructures

16 Jan2020

Speaker: Chih-Kang Shih - Department of Physics, The University of Texas at Austin

Time: January 16, 2020 :: 2:00PM - 3:00PM

Location: Brimacombe 311

Recently, van der Waals heterostructures have emerged as a very powerful platform for designer quantum materials with many fascinating properties that are not possessed by the constituent monolayers achieving novel device functionality. In terms of designer vdW hetero-bilayers, the interlayer interaction is the controlling parameter determining the electronic structures of the heterostructure as a whole.

In this talk I...

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CM Seminar : 2D moiré superlattices: a new Hubbard model simulator

09 Jan2020

Speaker: Kin Fai Mak - Cornell University

Time: January 09, 2020 :: 2:00PM - 3:00PM

Location: Brimacombe 311

The Hubbard model, first formulated by physicist John Hubbard in the 1960s, is a simple theoretical model of interacting quantum particles in a lattice. The model is thought to capture the essential physics of high-temperature superconductors, magnetic insulators, and other complex emergent quantum many-body ground states. Although the Hubbard model is greatly simplified as a representation of most real...

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CFREF site visit poster session and reception

12 Dec2019

Time: Dec 12, 2019 :: 4:00PM - 6:30PM

Location: Brimacombe

As part of the CFREF review panel visit on December 12-13, we will be holding a poster session and reception in the Brimacombe building addition (the new wing) on Thursday, December 12 from 4:00 - 6:30 pm. The CFREF midterm review is an important milestone in the development of our institute. As such, we would like to take this opportunity...

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Special seminar - Spectroscopy of collective modes in 4d-metal compounds

11 Dec2019

Speaker: Bernhard Keimer - Max Planck Institute

Time: December 11, 2019 :: 10:30AM - 11:30AM

Location: Hennings 318

Abstract

Quantum materials with 4d valence electrons serve as a platform for fundamental concepts such as unconventional superconductivity, Kitaev spin liquids, and solid-state analogues of the Higgs mode in particle physics. However, basic questions about the electronic structure of these materials remain unanswered, because key interaction parameters (including the Hund’s coupling, spin–orbit coupling, and exchange interactions) are...

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CM Seminar - Scalable quantum computing with neutral atoms

05 Dec2019

Speaker: Mark Saffman, Department of Physics, University of Wisconsin-Madison

Time: December 5, 2019 :: 2:00PM - 3:00PM

Location: Brimacombe 311

Abstract:

Quantum computing is a few decades old and is currently an area where there is great excitement, and rapid developments. One of the daunting challenges in developing a practical quantum computer is the need to scale to a very large number of qubits. Neutral atoms are one of the most promising approaches for meeting this challenge....

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CM Seminar - Modelling muons in magnetic materials

28 Nov2019

Speaker: J. Kane Shenton

Time: November 28, 2019 :: 2:00PM - 3:00PM

Abstract:

Muon spin spectroscopy (µSR), a technique in which spin-polarised positive muons are implanted into a material, has been successfully used to study a wide range of materials. Interpreting µSR spectra, however, often requires knowledge of the precise muon stopping site(s) in the material. In this talk, I will outline our approach to finding muon stopping sites using...

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CM Seminar - Topological Skyrmion phases of matter

27 Nov2019

Speaker: Ashley Cook - UC Berkeley

Time: November 27, 2019 :: 2:00PM - 3:00PM

Location: Brimacombe 311

Abstract

We introduce topological phases of matter defined by non-trivial homotopy groups into the literature, the chiral and helical topological Skyrmion insulators. These phases generalize and extend the concepts of the Chern insulator and quantum spin Hall insulator, respectively.

Hamiltonians characterizing chiral and helical topological Skyrmion insulator phases, which also possess particle-hole symmetry, may be re-interpreted as...

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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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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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