Weak value measurement with an incoherent measuring device

Young Wook Cho, Hyang Tag Cho, Young Sik Ra, Yoon Ho Kim

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

Abstract

In the Aharonov-Albert-Vaidman (AAV) weak measurement, it is assumed that the measuring device or the pointer is in a quantum mechanical pure state. In reality, however, it is often not the case. In this paper, we generalize the AAV weak measurement scheme to include more generalized situations in which the measuring device is in a mixed state. We also report an optical implementation of the weak value measurement in which the incoherent pointer is realized with the pseudo-thermal light. The theoretical and experimental results show that the measuring device under the influence of partial decoherence could still be used for amplified detection of minute physical changes and are applicable for implementing the weak value measurement for massive particles.

Original languageEnglish
Title of host publicationQuantum Electronics and Laser Science Conference, QELS 2010
Publication statusPublished - 2010
EventQuantum Electronics and Laser Science Conference, QELS 2010 - San Jose, CA, United States
Duration: 2010 May 162010 May 21

Publication series

NameOptics InfoBase Conference Papers
ISSN (Electronic)2162-2701

Other

OtherQuantum Electronics and Laser Science Conference, QELS 2010
CountryUnited States
CitySan Jose, CA
Period10/5/1610/5/21

All Science Journal Classification (ASJC) codes

  • Instrumentation
  • Atomic and Molecular Physics, and Optics

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