General and Optimal Scheme for Local Conversion of Pure States |
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| Authors: | JIN Rui-Bo CHEN Li-Bing WANG Fa-Qiang LU Yi-Qun |
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| Institution: | Laboratory of Photonic Information Technology, School for Information and Optoelectronic Science and Engineering, South China Normal University, Guangzhou 510006Department of Photoelectron and Physics, Foshan University, Foshan 528000 |
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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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