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|a Cao, Jianshu
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|a Massachusetts Institute of Technology. Department of Chemistry
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|a Discontinuities in Driven Spin-Boson Systems due to Coherent Destruction of Tunneling: Breakdown of the Floquet-Gibbs Distribution
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|b American Physical Society (APS),
|c 2020-07-07T12:23:42Z.
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|z Get fulltext
|u https://hdl.handle.net/1721.1/126056
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|a If an open quantum system is periodically driven with high frequency and the driving commutes with the system-bath coupling operator, it is known that the system approaches a Floquet-Gibbs state, a generalization of Gibbs states to periodically driven systems. Here, we investigate the stationary state of an ac-driven system when the driving and dissipation are noncommutative. Then, the resulting stationary state does not obey the Floquet-Gibbs distribution, and the system dynamics is determined by inelastic scattering processes of the driving field. Based on the Floquet-Redfield formalism, we show that the probability distribution can exhibit population inversion and discontinuities, i.e., jumps, for parameters at which coherent destruction of tunneling takes place. These discontinuities can be observed as intensity jumps in the emission into the bath.
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|a National Science Foundation (U.S.) (Grant CHE 180030)
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|a National Science Foundation (U.S.) (Grant CHE 1836913)
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|a National Natural Science Foundation of China (Grant U1930402)
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|t Physical review letters
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