Analog Quantum Simulation of Topological Lattice Models with a Parametric Cavity
Abstract: There has been a growing interest in realizing quantum simulators for physical systems where perturbative methods are ineffective. The scalability and flexibility of circuit quantum electrodynamics (cQED) make it a promising platform to implement various types of simulators, including lattice models of strongly-coupled field theories. Here, we use a multimode superconducting parametric cavity as a hardware-efficient analog quantum simulator, realizing a lattice in synthetic dimensions with complex hopping interactions.
Fusion category symmetry-protected topological order in the generalized cluster state
Abstract: Despite growing interest in beyond-group symmetries in quantum condensed matter systems, there are relatively few microscopic lattice models explicitly realizing these symmetries, and many phenomena have yet to be generalized at the microscopic level. In this work, we show that the generalized cluster state introduced in arXiv:1408.6237 is an SPT protected by categorical symmetry.
Linear Growth of Complexity in Brownian Circuits
Generating randomness efficiently is a key capability in both classical and quantum information processing applications. For example, Haar-random quantum states serve as primitives for applications including quantum cryptography, quantum process tomography, and randomized benchmarking. How quickly can these random states be generated? And how much randomness is really necessary for any given application? In this talk, I will address these questions in Brownian quantum circuit models, which admit a large-$N$ limit that can be solved exactly.
Lattice-Based Quantum Advantage from Rotated Measurements
Previous work by Brakerski et al. (2018) described a 2-party interactive protocol that enables one party to prove that they have quantum computational abilities. The protocol is based on the Learning With Errors (LWE) assumption, a standard computational hardness assumption from classical cryptography. In this talk, I will give an introduction to the protocol of Brakerski et al., and then I will discuss a recent paper of ours that optimizes their protocol and brings it closer to experimental realization.
Dr. Maissam Barkeshli (UMD) Discrete shift and quantized charge polarization: New topological invariants and quantized response of crystalline topological states
When: December 6th at 11amWhere: ATL 4402Speaker: Dr. Maissam Barkeshli (UMD)Title: Discrete shift and quantized charge polarization: New topological invariants and quantized response of crystalline topological states
Applications of artificial neural networks in learning quantum systems
Dissertation Committee Chair: Professor Mohammad Hafezi
Committee:
Professor Charles W. Clark, Co-Chair/Advisor
Professor Victor Yakovenko
Professor Alexey Gorshkov
Professor Christopher Jarzynski, Dean's representative
Tips for making peer review easy, fruitful, and successfully sharing your research
Abstract: Publishing an article requires not only scientific expertise but also engagement with the broader community, which is aided in many ways by editors. I'll share my perspective on peer review and provide some tips for successfully writing and publishing your next article. I will also show some data about the research from the University of Maryland that is published in the Physical Review journals. Finally, I hope to convince you that PRX Quantum is an excellent venue for publishing your results of interest to quantum science.
3+1 D Quantum spin liquid from Rydberg interactions -- a proposal
Abstract: Quantum Spin Liquids are exotic phases of matter whose low-energy physics is described as the deconfined phase of an emergent gauge theory. With recent theory proposals and an experiment showing preliminary signs of Z2 topological order, arrays of neutral atoms with Rydberg interactions have emerged as a promising platform to realize a spin liquid. In this work, we propose a way to realize the deconfined phase of U(1) gauge theory in 3 spatial dimensions from Rydberg interactions on a pyrochlore lattice.
Analog Quantum Simulation of Topological Lattice Models with a Parametric Cavity
Abstract: There has been a growing interest in realizing quantum simulators for physical systems where perturbative methods are ineffective. The scalability and flexibility of circuit quantum electrodynamics (cQED) make it a promising platform to implement various types of simulators, including lattice models of strongly-coupled field theories. Here, we use a multimode superconducting parametric cavity as a hardware-efficient analog quantum simulator, realizing a lattice in synthetic dimensions with complex hopping interactions.
Ultra-high Impedance Superconducting Circuits
Dissertation Committee Chair: Vladimir Manucharyan
Committee:
Professor Mohammad Hafezi
Professor Alicia Kollar
Professor Christopher Lobb
Professor Jay Deep Sau