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Constructing quantum many-body scar Hamiltonians from Floquet automata
Pierre-Gabriel Rozon, Michael J. Gullans, Kartiek Agarwal
We provide a systematic approach for constructing approximate quantum many-body scars (QMBS) starting from two-layer Floquet automaton circuits that exhibit trivial many-body reviv…
Tight bounds on the convergence of noisy random circuits to the uniform distribution
Abhinav Deshpande, Pradeep Niroula, Oles Shtanko +3
We study the properties of output distributions of noisy, random circuits. We obtain upper and lower bounds on the expected distance of the output distribution from the "useless" u…
Two-qubit silicon quantum processor with operation fidelity exceeding 99%
A. R. Mills, C. R. Guinn, M. J. Gullans +4
Silicon spin qubits satisfy the necessary criteria for quantum information processing. However, a demonstration of high fidelity state preparation and readout combined with high fi…
Observation of measurement-induced quantum phases in a trapped-ion quantum computer
Crystal Noel, Pradeep Niroula, Daiwei Zhu +8
Many-body open quantum systems balance internal dynamics against decoherence from interactions with an environment. Here, we explore this balance via random quantum circuits implem…
Singularities in nearly-uniform 1D condensates due to quantum diffusion
C. L. Baldwin, P. Bienias, A. V. Gorshkov +2
Dissipative systems can often exhibit wavelength-dependent loss rates. One prominent example is Rydberg polaritons formed by electromagnetically-induced transparency, which have lo…
Universal scattering with general dispersion relations
Yidan Wang, Michael J. Gullans, Xuesen Na +2
Many synthetic quantum systems allow particles to have dispersion relations that are neither linear nor quadratic functions. Here, we explore single-particle scattering in general…