für Mathematik in den Naturwissenschaften Leipzig Concurrence , Tangle and Fully Entangled Fraction
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چکیده
We show that although we can not distill a singlet from many pairs of bound entangled states, the concurrence and tangle of two entangled quantum states are always strictly larger than that of one, even both entangled quantum states are bound entangled. We present a relation between the concurrence and the fidelity of optimal teleportation. We also give new upper and lower bounds for concurrence and tangle.
منابع مشابه
für Mathematik in den Naturwissenschaften Leipzig
In this review, we introduce well-known Bell inequalities, the relations between the Bell inequality and quantum separability, and the entangle-ment distillation of quantum states. It is shown that any pure entangled quantum state violates one of Bell-like inequalities. Moreover, quantum states that violate any one of these Bell-like inequalities are shown to be distillable. New Bell inequaliti...
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تاریخ انتشار 2010