期刊
PHYSICAL REVIEW LETTERS
卷 118, 期 14, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.118.140403
关键词
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资金
- UMass Boston [P20150000029279]
- John Templeton Foundation
- Swiss National Science Foundation
- NSF [CHE-1112825]
We introduce a scheme for the quantum simulation of many-body decoherence based on the unitary evolution of a stochastic Hamiltonian. Modulating the strength of the interactions with stochastic processes, we show that the noise-averaged density matrix simulates an effectively open dynamics governed by k-body Lindblad operators. Markovian dynamics can be accessed with white-noise fluctuations; nonMarkovian dynamics requires colored noise. The time scale governing the fidelity decay under many-body decoherence is shown to scale as N-2k with the system size N. Our proposal can be readily implemented in a variety of quantum platforms including optical lattices, superconducting circuits, and trapped ions.
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