Quantum Zeno effect in the multimode quantum Rabi model
Quantum Physics
2019-04-09 v1
Abstract
We study the quantum Zeno effect (QZE) and quantum anti-Zeno effect (QAZE) of the multimode quantum Rabi model(MQRM). We derive an analytic expression for the decay rate of the survival probability where cavity modes are initially prepared as thermal equilibrium states. A crossover from QZE to QAZE is observed due to the energy backflow induced by high frequency cavity modes. In addition, we apply a numerically exact method based on the thermofield dynamics(TFD) theory and the matrix product states(MPS) to study the effect of squeezing of the cavity modes on the QZE of the MQRM. The influence of the squeezing angle, squeezing strength and temperature on the decay rate of the survival probability are discussed.
Keywords
Cite
@article{arxiv.1904.03872,
title = {Quantum Zeno effect in the multimode quantum Rabi model},
author = {Shu He and Chen Wang and Xue-Zao Ren and Li-Wei Duan and Qing-Hu Chen},
journal= {arXiv preprint arXiv:1904.03872},
year = {2019}
}
Comments
10 pages, 5 figures