Chin. Phys. Lett.  2008, Vol. 25 Issue (3): 1098-1101    DOI:
Original Articles |
Continuous-Variable Entanglement Transfer from Cavity Field to Two Mesoscopic Josephson Junctions
CHANG Ping;SHAO Bin;WANG Zhao-Ming;ZOU Jian
Department of Physics, Beijing Institute of Technology, Beijing 100081
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CHANG Ping, SHAO Bin, WANG Zhao-Ming et al  2008 Chin. Phys. Lett. 25 1098-1101
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Abstract We consider a composite system of two remote mesoscopic Josephson
junctions interacting locally with a two-mode non-classical cavity field and investigate entanglement transfer from a bipartite continuous-variable (CV) system to a pair of localized mesoscopic Josephson junctions. We obtain analytically the time-dependent characteristic functions in the Wigner representation for the two CV subsystems, where two cases are considered for the zero and finite temperatures. Furthermore, we analyse the influences of the temperature on the period recovery of the entanglement.
Keywords: 74.50.+r      42.50.Dv      03.67.-a     
Received: 26 November 2007      Published: 27 February 2008
PACS:  74.50.+r (Tunneling phenomena; Josephson effects)  
  42.50.Dv (Quantum state engineering and measurements)  
  03.67.-a (Quantum information)  
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https://cpl.iphy.ac.cn/       OR      https://cpl.iphy.ac.cn/Y2008/V25/I3/01098
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CHANG Ping
SHAO Bin
WANG Zhao-Ming
ZOU Jian
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