热环境中经典相干场量子激发的非经典性
量子物理
2015-06-26 v3
摘要
通过探究维格纳函数负部体积随耗散时间的减小，研究了热信道中光子添加相干场的非经典性。当衰变时间超过阈值时，维格纳函数变为正。对于单光子添加相干态的情况，我们推导出了热信道中衰变时间的精确阈值。对于任意部分负维格纳分布函数，给出了热浴平均光子数与衰变时间阈值之间的通用解析关系。最后简要讨论了单光子添加相干态在量子计算中的可能应用。OCIS codes: 270.0270, 270.2500, 000.5490
引用
@article{arxiv.quant-ph/0702137,
title = {Nonclassicality of quantum excitation of classical coherent fields in thermal environments},
author = {Shang-Bin Li and Justin Liu and Xu-Bo Zou and Guang-Can Guo},
journal= {arXiv preprint arXiv:quant-ph/0702137},
year = {2015}
}
备注
10 pages, 5 figures, three references are added, and a brief discussion of the possible applications of SPACSs in quantum information processes has been added; Accepted by JOSA B