Additive extensions of a quantum channel


We study extensions of a quantum channel whose one-way capacities are described by a single-letter formula. This provides a simple technique for generating powerful upper bounds on the capacities of a general quantum channel. We apply this technique to two qubit channels of particular interest-the depolarizing channel and the channel with independent phase… (More)


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Citations per Year

Citation Velocity: 7

Averaging 7 citations per year over the last 3 years.

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