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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…
Chiral transport of hot carriers in graphene in the quantum Hall regime
Bin Cao, Tobias Grass, Olivier Gazzano +12
Photocurrent (PC) measurements can reveal the relaxation dynamics of photo-excited hot carriers beyond the linear response of conventional transport experiments, a regime important…
Operator scaling dimensions and multifractality at measurement-induced transitions
Aidan Zabalo, Michael J. Gullans, Justin H. Wilson +5
Repeated local measurements of quantum many body systems can induce a phase transition in their entanglement structure. These measurement-induced phase transitions (MIPTs) have bee…
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…