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Editor’s summary Abstract Supplementary Materials References and Notes Information & Authors Metrics & Citations Check Access References Figures Tables Media Share Editor’s summary After a perturbation, most many-body systems eventually settle into an equilibrium thermal state. One way to prevent this is to introduce disorder, resulting in the localization of excitations.
Abstract An important measure of the development of quantum computing platforms has been the simulation of increasingly complex physical systems. Before fault-tolerant quantum computing, robust error-mitigation strategies were necessary to continue this growth. Here, we validate recently introduced error-mitigation strategies that exploit the expectation that the ideal output of a quantum algorithm would be a pure state.
Abstract We calculate the energy decay rate of Josephson qubits and superconducting resonators from nonequilibrium quasiparticles. The decay rates from experiments are shown to be consistent with predictions based on a prior measurement of the quasiparticle density nqp=10/μm3, which suggests that nonequilibrium quasiparticles are an important decoherence source for Josephson qubits.
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