Reversing the weak quantum measurement for a photonic qubit

Yong Su Kim, Young Wook Cho, Young Sik Ra, Yoon Ho Kim

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We demonstrate the conditional reversal of a weak quantum measurement on a photonic qubit. The state recovery fidelity, determined by quantum process tomography, is shown to be over 94% for partial-collapse strength up to 0.9. We also experimentally study information gain due to the weak measurement and discuss the role of the reversing operation as an information erasure.

Original languageEnglish
Title of host publicationLasers and Electro-Optics/Quantum Electronics and Laser Science Conference
Subtitle of host publication2010 Laser Science to Photonic Applications, CLEO/QELS 2010
Publication statusPublished - 2010
EventLasers and Electro-Optics/Quantum Electronics and Laser Science Conference: 2010 Laser Science to Photonic Applications, CLEO/QELS 2010 - San Jose, CA, United States
Duration: 2010 May 162010 May 21

Publication series

NameLasers and Electro-Optics/Quantum Electronics and Laser Science Conference: 2010 Laser Science to Photonic Applications, CLEO/QELS 2010

Other

OtherLasers and Electro-Optics/Quantum Electronics and Laser Science Conference: 2010 Laser Science to Photonic Applications, CLEO/QELS 2010
CountryUnited States
CitySan Jose, CA
Period10/5/1610/5/21

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering
  • Radiation

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