Channel correction via quantum erasure
arXiv:quant-ph/0611111 · doi:10.1103/PhysRevLett.99.180501
Abstract
By exploiting a generalization of recent results on environment-assisted channel correction, we show that, whenever a quantum system undergoes a channel realized as an interaction with a probe, the more efficiently the information about the input state can be erased from the probe, the higher is the corresponding entanglement fidelity of the corrected channel, and vice-versa. The present analysis applies also to channels for which perfect quantum erasure is impossible, thus extending the original quantum eraser arrangement, and naturally embodies a general information-disturbance tradeoff.
4 pages RevTex4. Revised version, drastically modified. To appear on PRL
References in corpus (6)
Cited by in corpus (14)
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