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Simulating Entangling Unitary Operator Using Non-maximally Entangled States |
| LI Chun-Xian, WANG Cheng-Zhi, NIE Liu-Ying, LI Jiang-Fan |
| Department of Physics and Electronic Science, Changsha University of Science and Technology, Changsha 410004 |
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| Cite this article: |
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LI Chun-Xian, WANG Cheng-Zhi, NIE Liu-Ying et al 2009 Chin. Phys. Lett. 26 020303 |
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Abstract We use non-maximally entangled states (NMESs) to simulate an entangling unitary operator (EUO) with a certain probability. Given entanglement resources, the probability of the success we achieve is a decreasing function of the parameters of the EUO. Given an EUO, for certain entanglement resources the result is optimal, i.e., the probability obtains a maximal value, and for optimal result higher parameters of the EUO match more amount of entanglement resources. The probability of the success we achieve is higher than the known results under some condition.
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| Keywords:
03.67.-a
03.67.Hk
03.65.Ud
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Received: 27 October 2008
Published: 20 January 2009
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