Time-resolved dual-beam two-photon interferences with high visibility

J. Brendel, E. Mohler, and W. Martienssen
Phys. Rev. Lett. 66, 1142 – Published 4 March 1991
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Abstract

We perform a two-photon interference experiment in a Michelson interferometer with photon pairs produced by spontaneous parametric down-conversion. The interferometer is set to a path difference much larger than the coherence length of the light field. Application of a time-resolved coincidence detection scheme reveals two-photon interference fringes with a visibility of 87%. This high visibility clearly demonstrates the nonclassical nature of the observed interference and should allow further spin-free tests of Bell’s inequalities.

  • Received 5 November 1990

DOI:https://doi.org/10.1103/PhysRevLett.66.1142

©1991 American Physical Society

Authors & Affiliations

J. Brendel, E. Mohler, and W. Martienssen

  • Physikalisches Institut der Universität Frankfurt am Main, D-6000 Frankfurt am Main, Federal Republic of Germany

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Issue

Vol. 66, Iss. 9 — 4 March 1991

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