Approximate transformations and robust manipulation of bipartite pure-state entanglement

被引:0
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作者
Vidal, Guifreá [1 ]
Jonathan, Daniel [2 ]
Nielsen, M.A. [3 ]
机构
[1] Dept. d'Estructura i Constituents M., Universitat de Barcelona, Diagonal 647, E-08028 Barcelona, Spain
[2] Optics Section, Blackett Laboratory, Imperial College, London SW7 2BZ, United Kingdom
[3] Department of Physics, MC 12-33, California Institute of Technology, Pasadena, CA 91125, United States
关键词
Approximation theory - Cryptography - Information theory - Mathematical transformations - Matrix algebra - Probability - Theorem proving;
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摘要
Optimal approximate schemes for transforming one pure entangled state into another were derived using local operations and classical communication. Using these schemes, it was possible to estimate how robust surprising effects such as the entanglement catalysis are against small perturbations. Further, a nonlocal fidelity to measure the difference in the entanglement present in two quantum states was derived.
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页码:012304 / 012301
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