中国物理B ›› 2023, Vol. 32 ›› Issue (4): 40301-040301.doi: 10.1088/1674-1056/ac7e34
Ke Zhang(张科)1, Lan-Lan Li(李兰兰)1, Da-Wei Guo(郭大伟)1, and Hong-Yi Fan(范洪义)2,†
Ke Zhang(张科)1, Lan-Lan Li(李兰兰)1, Da-Wei Guo(郭大伟)1, and Hong-Yi Fan(范洪义)2,†
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.
中图分类号: (Quantum mechanics)