Effect of system energy on quantum signatures of chaos in the two-photon Dicke model
arXiv:1902.04275 · doi:10.1103/PhysRevE.100.022207
Abstract
We have studied entanglement entropy and Husimi distribution as a tool to explore chaos in the quantum two-photon Dicke model. With the increase of the energy of system, the linear entanglement entropy of coherent state prepared in the classical chaotic and regular regions become more distinguishable, and the correspondence relationship between the distribution of time-averaged entanglement entropy and the classical Poincaré section has been improved obviously. Moreover, Husimi distribution for the initial states corresponded to the points in the chaotic region in the higher energy system disperses more quickly than that in the lower energy system. Our result imply that higher system energy has contributed to distinguish the chaotic and regular behavior in the quantum two-photon Dicke model.
17 pages, 12 figures, Accepted for publication in Phys. Rev. E
References in corpus (7)
- Lyapunov Exponent and Out-of-Time-Ordered Correlator's Growth Rate in a Chaotic System
- Chaos signatures in the short and long time behavior of the out-of-time ordered correlator
- Superradiant Solid in Cavity QED Coupled to a Lattice of Rydberg Gas
- Entanglement and chaos in the kicked top
- Quantum chaos and entanglement in ergodic and non-ergodic systems
- Entanglement and its relationship to classical dynamics
- Untangling entanglement and chaos
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- Long-time signatures of chaos in large atom-light frequency ratios Rabi model