Quantum resonant effect of the strongly-driven spin-boson model

Details Quantum resonant effect of the strongly-driven spin-boson model Quantum resonant effect of the strongly-driven spin-boson model

2011-07-19

arxiv.org/abs/1107.3634v1

Physics

Quantum Physics

4 figures; Submitted for publication in March

Scientific paper

In this paper we discuss both analytically and numerically the rich quantum dynamics of the spin-boson model driven by a time-independent field of photon. Interestingly, we predict a new Rabi oscillation, whose period is inversely proportional to the driving amplitude. More surprisingly, some nonzero resonant peaks are found for some special values of the \emph{strong} driving regime. Moreover, for the different resonant positions, the peaks have different values. Thus, an important application of this resonance effect is to realize the precision measurement of the relative parameters in experiment. We also illustrate that this resonant effect arises from the interference of the nontrivial periodic phase factors induced by the evolution of the coherent states in two different subspaces. Our predictions may be, in principle, observed in the solid-state cavity quantum electrodynamics with the ultrastrong coupling if the driving magnitude of the photon field is sufficiently large.

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