Dynamics of a quantum oscillator strongly and off-resonantly coupled with a two-level system

Details Dynamics of a quantum oscillator strongly and off-resonantly coupled with a two-level system Dynamics of a quantum oscillator strongly and off-resonantly coupled with a two-level system

2009-06-08

arxiv.org/abs/0906.1449v1

Physics Letters A, 373, (2009), 2753

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

19 pages, 5 figures

Scientific paper

10.1016/j.physleta.2009.05.040

Beyond the rotating-wave approximation, the dynamics of a quantum oscillator interacting strongly and off-resonantly with a two-level system exhibit beatings, whose period equals the revival time of the two-level system. On a longer time scale, the quantum oscillator shows collapses, revivals and fractional revivals, which are encountered in oscillator observables like the mean number of oscillator quanta and in the two-level inversion population. Also the scattered oscillator field shows doublets with symmetrically displaced peaks.

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