Citation:
J Kudler-Flam, H Shapourian, and S Ryu. 2020. “The negativity contour: a quasi-local measure of entanglement for mixed states.” SciPost Phys., 8, Pp. 63.
Ultra-Quantum Matter
Recent developments demonstrate that in the right circumstances, quantum aspects can extend to macroscopic scale. This is UQM.
Recent Publications
Non-local Entanglement and Fast Scrambling in De-Sitter Holography
Citation:
Hao Geng. 2020. “Non-local Entanglement and Fast Scrambling in De-Sitter Holography.” arXiv:2005.00021.
Quantum Hall spin liquids and their possible realization in moiré systems
Citation:
Ya-Hui Zhang and T Senthil. 2020. “Quantum Hall spin liquids and their possible realization in moiré systems.” arXiv:2003.13702.
A systematic construction of gapped non-liquid states
Citation:
Xiao-Gang Wen. 2020. “A systematic construction of gapped non-liquid states.” arXiv:2002.02433.
Many-body Chern number from statistical correlations of randomized measurements
Citation:
Ze-Pei Cian, Hossein Dehghani, Andreas Elben, Benoît Vermersch, Guanyu Zhu, Maissam Barkeshli, Peter Zoller, and Mohammad Hafezi. 2020. “Many-body Chern number from statistical correlations of randomized measurements.” arXiv:2005.13543.
Abstract:
One of the main topological invariants that characterizes several topologically-ordered phases is the many-body Chern number (MBCN). Paradigmatic examples include several fractional quantum Hall phases, which are expected to be realized in different atomic and photonic quantum platforms in the near future. Experimental measurement and numerical computation of this invariant is conventionally based on the linear-response techniques which require having access to a family of states, as a function of an external parameter, which is not suitable for many quantum simulators. Here, we propose an ancilla-free experimental scheme for the measurement of this invariant, without requiring any knowledge of the Hamiltonian. Specifically, we use the statistical correlations of randomized measurements to infer the MBCN of a wavefunction. Remarkably, our results apply to disk-like geometries that are more amenable to current quantum simulator architectures.Topological terms on topological defects: a quantum Monte Carlo study
Citation:
Toshihiro Sato, Martin Hohenadler, Tarun Grover, John McGreevy, and Fakher F. Assaad. 2020. “Topological terms on topological defects: a quantum Monte Carlo study.” arXiv:2005.08996.
Exotic Symmetries, Duality, and Fractons in 2+1-Dimensional Quantum Field Theory
Citation:
Nathan Seiberg and Shu-Heng Shao. 2020. “Exotic Symmetries, Duality, and Fractons in 2+1-Dimensional Quantum Field Theory.” arXiv:2003.10466.
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