Graph state basis for Pauli Channels

Details Graph state basis for Pauli Channels Graph state basis for Pauli Channels

2010-07-27

arxiv.org/abs/1007.4611v1

Physical Review A 83, 052316 (2011)

Physics

Quantum Physics

5 pages

Scientific paper

10.1103/PhysRevA.83.052316

We introduce graph state basis diagonalization to calculate the coherent information of a quantum code passing through a Pauli channel. The scheme is 5000 times faster than the best known one for some concatenated repetition codes, providing us a practical constructive way of approaching the quantum capacity of a Pauli channel. The calculation of the coherent information of non-additive quantum code can also be greatly simplified in graph state basis.

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