Fourth-order interference effects at large distances

JG Rarity, P.R. Tapster

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

56 Citations (Scopus)


The authors present an experimental demonstration of a fourth-order interference effect first suggested by Franson [Phys. Rev. Lett. 62, 2205 (1989)], where pair photons are directed to two separated Mach-Zehnder interferometers. Apparent nonlocal control of the output ports in which coincident photons are detected can be demonstrated. They show that this effect is present when one of the photons has passed through 170 m of multimode optical fiber. Such a system could form the basis of an interception-proof communication system
Translated title of the contributionFourth-order interference effects at large distances
Original languageEnglish
Pages (from-to)2052 - 2056
Number of pages5
JournalPhysical Review A: Atomic, Molecular and Optical Physics
Volume45 (3)
Publication statusPublished - Feb 1992

Bibliographical note

Publisher: American Physical Society

Structured keywords

  • Photonics and Quantum


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