Discontinuities in Driven Spin-Boson Systems due to Coherent Destruction of Tunneling: Breakdown of the Floquet-Gibbs Distribution
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Active_Sheet_crosstab.csv
Description
Published version
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4.1 KB
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Unknown
Checksum (MD5)
cd3209f0e81418972560f837b5294f40
Author(s)
Cao, Jianshu
Date Issued
September 2019
Journal
Physical review letters
Publisher
American Physical Society (APS)
Citation
Engelhard, Georg, Gloria Platero and Jianshu Cao. “Discontinuities in Driven Spin-Boson Systems due to Coherent Destruction of Tunneling: Breakdown of the Floquet-Gibbs Distribution.” Physical review letters, vol. 123, 2019, 120602 © 2019 The Author(s)
Version
Final published version
Abstract
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.
MIT Department
Massachusetts Institute of Technology. Department of Chemistry
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DOI of Published Version
https://doi.org/10.1103/PhysRevLett.123.120602https://dx.doi.org/
