Bipartite subspaces having no LOCC-distinguishable bases

نویسنده

  • John Watrous
چکیده

It is proved that there exist subspaces of bipartite tensor product spaces that have no orthonormal bases that can be perfectly distinguished by means of LOCC protocols. A corollary of this fact is that there exist quantum channels having sub-optimal classical capacity even when the receiver may communicate classically with a third party that represents the channel’s environment.

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تاریخ انتشار 2005