Two-photon interference in a standard Mach-Zehnder interferometer

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PhysRevA494243.pdf (309.22 KB)

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https://link.aps.org/doi/10.1103/PhysRevA.49.4243

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http://doi.org/10.1103/PhysRevA.49.4243
 http://hdl.handle.net/11603/39869

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UMBC Faculty Collection
UMBC Physics Department

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Date

1994-05-01

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journal articles
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Citation of Original Publication

Shih, Y. H., A. V. Sergienko, M. H. Rubin, T. E. Kiess, and C. O. Alley. “Two-Photon Interference in a Standard Mach-Zehnder Interferometer.” Physical Review A 49, no. 5 (1994): 4243–46. https://doi.org/10.1103/PhysRevA.49.4243.

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©1994 American Physical Society.

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UMBC Quantum Optics Laboratory

Abstract

A pair of light quanta with different colors (155.9-nm difference in center wavelength) generated from parametric down-conversion was injected collinearly into one input port of a Mach-Zehnder interferometer. Coincidence interference behavior was studied over a wide range of optical path differences of the interferometer. A measurement of 75% interference visibility with oscillation of the pump frequency for a large optical path difference of the interferometer (43 cm) is the signature of a quantum two-photon entangled state, which reflects both particle and wave nature of the light quanta in one experiment.