Experimental test of error-disturbance uncertainty relations by weak measurement

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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.

Original languageEnglish
Article number020402
JournalPhysical review letters
Volume112
Issue number2
DOIs
Publication statusPublished - 2014 Jan 15

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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