期刊
PHYSICAL REVIEW LETTERS
卷 120, 期 9, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.120.090401
关键词
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资金
- Engineering and Physical Sciences Research Council [EP/M506485/1, EP/P034616/1]
- EPSRC [EP/P034616/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [1492295, EP/P034616/1] Funding Source: researchfish
We study a system of spins (qubits) coupled to a common noisy environment, each precessing at its own frequency. The correlated noise experienced by the spins implies long-lived correlations that relax only due to the differing frequencies. We use a mapping to a non-Hermitian integrable Richardson-Gaudin model to find the exact spectrum of the quantum master equation in the high-temperature limit and, hence, determine the decay rate. Our solution can be used to evaluate the effect of inhomogeneous splittings on a system of qubits coupled to a common bath.
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