Repeatable quantum memory channels

Details Repeatable quantum memory channels Repeatable quantum memory channels

2008-08-28

arxiv.org/abs/0808.3851v1

Phys. Rev. A 78, 052114 (2008)

Physics

Quantum Physics

5 pages, 3 figures

Scientific paper

10.1103/PhysRevA.78.052114

Within the framework of quantum memory channels we introduce the notion of
repeatability of quantum channels. In particular, a quantum channel is called
repeatable if there exist a memory device implementing the same channel on each
individual input. We show that random unitary channels can be implemented in a
repeatable fashion, whereas the nonunital channels cannot.

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