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arxiv: quant-ph/0403063 · v1 · submitted 2004-03-08 · 🪐 quant-ph

Concurrence of mixed bipartite quantum states in arbitrary dimensions

classification 🪐 quant-ph
keywords mixedstatesarbitrarybipartiteconcurrencedimensionsquantumalgebraic
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We derive a lower bound for the concurrence of mixed bipartite quantum states, valid in arbitrary dimensions. As a corollary, a weaker, purely algebraic estimate is found, which detects mixed entangled states with positive partial transpose.

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