量子光学学报, 2015, 21 (2): 99, 网络出版: 2015-05-26
相干态统计特性的弱测量结构研究
Coherent State Statistics Properties in Weak Measurement
摘要
理论分析相干态位移参数估计在弱测量方法下的放大效应。引入偏振态作为附属态(Ancilla States),分别进行初选择和后选择,中间的相互作用采用了偏振相关的弱位移操作算符。通过最后检测光子数的分布来估计位移参数;在牺牲检测光子强度的情况下可以有效提高放大效应。
Abstract
The study of weak measurement amplification of displacement parameter in coherent state was presented. Polarization states were used as ancilla states to pre- and post-select the coherent state. Unlike the previous theories, the interaction operator is the displacement operator correlated with polarization. By detecting the average number and number states, we efficiently provided amplification with the sacrifice the detected possibility.
李钦政, 黄靖正, 曾贵华. 相干态统计特性的弱测量结构研究[J]. 量子光学学报, 2015, 21(2): 99. LI Qin-zheng, HUANG Jing-zheng, ZENG Gui-hua. Coherent State Statistics Properties in Weak Measurement[J]. Acta Sinica Quantum Optica, 2015, 21(2): 99.