On quantum efficiencies of optical states

D. W. Berry; A. I. Lvovsky

doi:10.1364/ICQI.2011.QTuH4

International Conference on Quantum Information
OSA Technical Digest (CD) (Optica Publishing Group, 2011),
paper QTuH4
•https://doi.org/10.1364/ICQI.2011.QTuH4

On quantum efficiencies of optical states

D. W. Berry and A. I. Lvovsky

International Conference on Quantum Information 2011

Ottawa Canada
6–8 June 2011
ISBN: 978-1-55752-928-2

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Tuesday Session VIII (QTuH)

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D. W. Berry and A. I. Lvovsky, "On quantum efficiencies of optical states," in International Conference on Quantum Information, OSA Technical Digest (CD) (Optica Publishing Group, 2011), paper QTuH4.

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Abstract

We propose a universal measure of efficiency associated with a quantum-optical state and show that this efficiency cannot be improved by any linear-optical processing combined with destructive conditional measurements.

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