Evolution of a two-mode squeezed vacuum in the amplitude dissipative channel |
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Authors: | Jiang Nian-Quan Fan Hong-Yi Xi Liu-Sheng Tang Long-Ying Yuan Xian-Zhang |
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Affiliation: | College of Physics and Electric Information, Wenzhou University, Wenzhou 325035, China; Department of Physics, Shanghai Jiao Tong University, Shanghai 200030, China; College of Foreign Languages, Wenzhou University, Wenzhou 325035, China |
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Abstract: | For the first time we derive the dissipating result of an initial two-mode squeezed pure vacuum state passing through a two-mode amplitude dissipative channel described by the direct product of two independent single-mode master equations. Although these two master equations do not mix the two modes (there is no coupling between them), since the two-mode squeezed state is simultaneously an entangled state, the final state which emerges from passing this channel is a two-mode mixed density operator. The compact expression of the outcoming state is obtained, which manifestly shows that as time evolves, the squeezing effect decreases. |
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Keywords: | squeezed vacuum state dissipative channel master equation |
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