Single-photon Decay and Initial State Sensitive Schr\"odinger Cat States In One-mode And Coupled Two-mode Nonlinear Optical Systems
Xinyu Zhao, Z. C. Shi, M. Qin, X. X. Yi · arXiv (Cornell University) · 2016
We investigate the influence of single-photon decay and initial states to the photon Schr\odinger cat states generated in the double-photon driven-dissipative processes in one-mode and coupled two-mode cases. The impact of single-photon decay and initial state on the average photon number, parity, entropy and Wigner function are checked in one-mode case. In two-mode linear and nonlinear coupling cases, the response of entanglement and mutual information to the single-photon decay and initial state are examined. Compared to linear coupling case, more intriguing nonclassical signatures of Wigner function appear in the nonlinear coupling case. Such nonclassical states can be used not only in exploring the divide between classical and quantum region but also in improving quantum measurement precision and in redundant coding correction in quantum information processing.