Time Evolution of Density Operator for Field Damping in Squeezed Bath Calculated by Squeezing Transformation and Entangled State Representation |
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| Authors: | Xu-bing Tang Hong-yi Fan |
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| Institution: | (1) Department of Material Science and Engineering, University of Science and Technology of China, Hefei, Anhui, 230026, China;(2) Department of Physics, Shanghai Jiao Tong University, Shanghai, 200030, China |
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| Abstract: | We find that a squeezing transformation can efficiently simplify the density operator equation of field damping in a squeezed
bath. Then the entangled state representation is introduced to solve the simplified equation and the time evolution of density
operator, which turns out to be a mixed coherent squeezed state.
Work supported by the President Foundation of Chinese Academy of Science and Specialized research fund for the doctorial progress
of Higher Education (SRFDP). |
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| Keywords: | Entangled state representation Squeezing transformation Master equation Thermo field dynamics |
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