Recovery in quantum error correction for general noise without measurement

Details Recovery in quantum error correction for general noise without measurement Recovery in quantum error correction for general noise without measurement

2011-02-08

arxiv.org/abs/1102.1618v2

Physics

Quantum Physics

10 pages

Scientific paper

It is known that one can do quantum error correction without syndrome measurement, which is often done in operator quantum error correction (OQEC). However, the physical realization could be challenging, especially when the recovery process involves high-rank projection operators and a superoperator. We use operator theory to improve OQEC so that the implementation can always be done by unitary gates followed by a partial trace operation. Examples are given to show that our error correction scheme outperforms the existing ones in various scenarios.

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