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Open Quantum Systems Decoherence
Quantum Foundations
Noise and disturbance in quantum measurements: an information-theoretic approach
arXiv
Authors: Francesco Buscemi, Michael J. W. Hall, Masanao Ozawa, Mark M. Wilde
Year
2013
Paper ID
31261
Status
Preprint
Abstract Read
~2 min
Abstract Words
73
Citations
N/A
Abstract
We introduce information-theoretic definitions for noise and disturbance in quantum measurements and prove a state-independent noise-disturbance tradeoff relation that these quantities have to satisfy in any conceivable setup. Contrary to previous approaches, the information-theoretic quantities we define are invariant under relabelling of outcomes, and allow for the possibility of using quantum or classical operations to `correct' for the disturbance. We also show how our bound implies strong tradeoff relations for mean square deviations.
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- We introduce information-theoretic definitions for noise and disturbance in quantum measurements and prove a state-independent noise-disturbance tradeoff relation that these...
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