Chinese Journal of Quantum Electronics, Volume. 26, Issue 4, 446(2009)
Entanglement swapping of tripartite entangled coherent state by linear optics devices
A scheme for the entanglement swapping of entangled states with continuous variable is presented, in which the bipartite maximally entangled coherent state serves as the quantum channel. With the help of the idea of teleportation, using beam splitter and phase-shifter, entanglement swapping of tripartite entangled coherent state can be realized. In this scheme, the entanglement swapping is failure only for one measurement process. The failure probability is very small. The detail results show that the probability and the minimum of total average fidelity for successful swapping an arbitrary tripartite entangled coherent state is nearly 1 when the mean number of photons is larger than 2.
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LI Dong-mei. Entanglement swapping of tripartite entangled coherent state by linear optics devices[J]. Chinese Journal of Quantum Electronics, 2009, 26(4): 446
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Received: Mar. 30, 2008
Accepted: --
Published Online: May. 24, 2010
The Author Email: Dong-mei LI (qufulidongmei@163.com)
CSTR:32186.14.