Experimental Test of Error-Disturbance Uncertainty Relations by Weak Measurement

Experimental Test of Error-Disturbance Uncertainty Relations by Weak Measurement We experimentally test the error-disturbance uncertainty relation (EDR) in generalized, strength-variable measurement of a single photon polarization qubit, making use of weak measurement that keeps the initial signal state practically unchanged. We demonstrate that the Heisenberg EDR is violated, yet the Ozawa and Branciard EDRs are valid throughout the range of our measurement strength. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Physical Review Letters American Physical Society (APS)

Experimental Test of Error-Disturbance Uncertainty Relations by Weak Measurement

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Publisher
American Physical Society (APS)
Copyright
© 2014 American Physical Society
Subject
LETTERS; General Physics: Statistical and Quantum Mechanics, Quantum Information, etc.
ISSN
0031-9007
eISSN
1079-7114
D.O.I.
10.1103/PhysRevLett.112.020402
Publisher site
See Article on Publisher Site

Abstract

We experimentally test the error-disturbance uncertainty relation (EDR) in generalized, strength-variable measurement of a single photon polarization qubit, making use of weak measurement that keeps the initial signal state practically unchanged. We demonstrate that the Heisenberg EDR is violated, yet the Ozawa and Branciard EDRs are valid throughout the range of our measurement strength.

Journal

Physical Review LettersAmerican Physical Society (APS)

Published: Jan 15, 2014

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