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arXiv · 0808.3851

Repeatable quantum memory channels

Tomas Rybar·Mário Ziman
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Abstract

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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Tomas Rybar, Mário Ziman. 2008-08-28. Repeatable quantum memory channels. https://doi.org/10.1103/physreva.78.052114

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