Faraday quantum clock and nonlocal photon pair correlations

Y. Japha, G. Kurizki

Research output: Contribution to journalArticlepeer-review

6 Scopus citations


We study the use of the Faraday effect as a quantum clock for measuring traversal times of evanescent photons through magnetorefractive structures. The Faraday effect acts both as a phase shifter and as a filter for circular polarizations. Only measurements based on the Faraday phase-shift properties are relevant to the traversal time measurements. The Faraday polarization filtering may cause the loss of nonlocal (Einstein-Podolsky-Rosen) two-photon correlations, but this loss can be avoided without sacrificing the clock accuracy. We show that a mechanism of destructive interference between consecutive paths is responsible for superluminal traversal times measured by the clock.

Original languageEnglish
Pages (from-to)1811-1816
Number of pages6
JournalPhysical Review A - Atomic, Molecular, and Optical Physics
Issue number3
StatePublished - 1 Jan 1999
Externally publishedYes

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics


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