Testing nonlocality of a single photon without a shared reference frame

Jonatan Bohr Brask*, Rafael Chaves, Nicolas Brunner

*Corresponding author for this work

Research output: Contribution to journalArticle (Academic Journal)peer-review

19 Citations (Scopus)

Abstract

The question of testing the nonlocality of a single photon has raised much debate over the last years. The controversy is intimately related to the issue of providing a common reference frame for the observers to perform their local measurements. Here we address this point by presenting a simple scheme for demonstrating the nonlocality of a single photon which does not require a shared reference frame. Specifically, Bell inequality violation can be obtained with certainty with unaligned devices, even if the relative frame fluctuates between each experimental run of the Bell test. Our scheme appears feasible with current technology and may simplify the realization of quantum communication protocols based on single-photon entanglement.

Original languageEnglish
Article number012111
Number of pages5
JournalPhysical Review A: Atomic, Molecular and Optical Physics
Volume88
Issue number1
DOIs
Publication statusPublished - 15 Jul 2013

Keywords

  • QUANTUM
  • ENTANGLEMENT
  • COHERENCE
  • STATES

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