摘要
The development of quantum optics theory based on the method of integration within an ordered product of operators(IWOP)has greatly stimulated the study of quantum states in the light field,especially non-Gaussian states with various non-classical properties.In this paper,the two-mode squeezing operator is derived with integral theory within the Weyl ordering product of operators using a combinatorial field in which one mode is a chaotic field and the other mode is a vacuum field.The density operator of the new light field,its entanglement property and photon number distribution are analyzed.We also note that tracing a three-mode pure state can yield this new light field.These methods represent a theoretical approach to investigating new density operators of light fields.
作者
张科
李兰兰
郭大伟
范洪义
Ke Zhang;Lan-Lan Li;Da-Wei Guo;Hong-Yi Fan(School of Electronic Engineering,Huainan Normal University,Huainan 232038,China;Department of Material Science and Engineering,University of Science and Technology of China,Hefei 230026,China)
基金
Project supported by the National Natural Science Foundation of China(Grant No.11775208)
the Foundation for Young Talents in College of Anhui Province,China(Grant Nos.gxyq2021210 and gxyq2019077)
the Natural Science Foundation of the Anhui Higher Education Institutions of China(Grant Nos.KJ2020A0638 and 2022AH051586)。
