A Class of Bound Entangled States
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چکیده
Quantum entangled states are used as key resources in quantum information processing such as quantum teleportation, cryptography, dense coding, error correction and parallel computation [1, 2]. To quantify the degree of entanglement a number of entanglement measures have been proposed for bipartite states. However most proposed measures of entanglement involve extremizations which are difficult to handle analytically. It turns out that to verify the separability of a general mixed states could be extremely difficult.
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تاریخ انتشار 2006