Conditions for manipulation of a set of entangled pure states

Details Conditions for manipulation of a set of entangled pure states Conditions for manipulation of a set of entangled pure states

2000-02-24

arxiv.org/abs/quant-ph/0002068v1

Physics

Quantum Physics

5 Pages, no Figure, REVTeX. The generalization of quant-ph/9908018

Scientific paper

We derive a sufficient condition for a set of pure states, each entangled in two remote $N$-dimensional systems, to be transformable to $k$-dimensional-subspace equivalent entangled states ($k\leq N$) by same local operations and classical communication. If $k=N$, the condition is also necessary. This condition reveals the function of the relative marginal density operators of the entangled states in the entanglement manipulation without sufficient information of the initial states.

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