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Evolution of a two-mode squeezed vacuum in the amplitude dissipative channel |
Jiang Nian-Quan(姜年权)a)†, Fan Hong-Yi(范洪义) b), Xi Liu-Sheng(席留生)c), Tang Long-Ying(唐龙英)a), and Yuan Xian-Zhang(袁先漳)a) |
a College of Physics and Electric Information, Wenzhou University, Wenzhou 325035, China; b Department of Physics, Shanghai Jiao Tong University, Shanghai 200030, China; c 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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Received: 04 May 2011
Revised: 13 June 2011
Accepted manuscript online:
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PACS:
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03.65.-w
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(Quantum mechanics)
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42.50.-p
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(Quantum optics)
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42.50.Dv
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(Quantum state engineering and measurements)
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Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 10947017/A05, 10874174, and A040408) and the Natural Science Foundation of Zhejiang Province of China (Grant No. Y6090529). |
Cite this article:
Jiang Nian-Quan(姜年权), Fan Hong-Yi(范洪义), Xi Liu-Sheng(席留生), Tang Long-Ying(唐龙英), and Yuan Xian-Zhang(袁先漳) Evolution of a two-mode squeezed vacuum in the amplitude dissipative channel 2011 Chin. Phys. B 20 120302
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