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General and Optimal Scheme for Local Conversion of Pure States |
| JIN Rui-Bo1,2;CHEN Li-Bing2;WANG Fa-Qiang1;LU Yi-Qun1 |
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1Laboratory of Photonic Information Technology, School for Information and Optoelectronic Science and Engineering, South China Normal University, Guangzhou 5100062Department of Photoelectron and Physics, Foshan University, Foshan 528000 |
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| Cite this article: |
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JIN Rui-Bo, CHEN Li-Bing, WANG Fa-Qiang et al 2008 Chin. Phys. Lett. 25 1961-1963 |
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Abstract We present general and optimal schemes for local conversion of pure states, via one specific example. First, we give the general solution of the doubly stochastic matrix. Then, we find the general and optimal positive-operator-valued measure (POVM) to realize the local conversion of pure states. Lastly, the physical realization of the POVM is discussed. We show that our scheme has a more general and better effect than other schemes.
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| Keywords:
03.67.Mn
03.67.Hk
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Received: 22 October 2007
Published: 31 May 2008
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| PACS: |
03.67.Mn
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(Entanglement measures, witnesses, and other characterizations)
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03.67.Hk
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(Quantum communication)
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[8] Preskill J 1998 Lecture Notes for Physics: QuantumInformation and Computation (Pasadena, CA: California Institute ofTechnology) |
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