New approach for normalization and photon-number distributions of photon-added (-subtracted) squeezed thermal states

• 来源期刊: 中国光学快报（英文版）
• 年，卷（期）: 2012,（8）
• 页码范围: 58-61
• 页数: 4页
• 语种: 英文
• DOI: 10.3788/COL201210.082701

摘要

Using the thermal field dynamics theory to convert the thermal state into a “pure” state in doubled Fock space,we find that the average value of efa+a under squeezed thermal state (STS) is just the generating function of Legendre polynomials.Based on this remarkable result,the normalization and photon-number distributions of m-photon added (or subtracted) STSs are conviently obtained as the Legendre polynomials.This new concise method can be expanded to the entangled case.