Observation of quantum beating in a simple beam-splitting experiment: Two-particle entanglement in spin and space-time

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PhysRevA502564.pdf (358.56 KB)

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https://link.aps.org/doi/10.1103/PhysRevA.50.2564

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http://doi.org/10.1103/PhysRevA.50.2564
 http://hdl.handle.net/11603/39919

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UMBC Physics Department
UMBC Faculty Collection

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Date

1994-09-01

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journal articles
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Citation of Original Publication

Shih, Y. H., and A. V. Sergienko. “Observation of Quantum Beating in a Simple Beam-Splitting Experiment: Two-Particle Entanglement in Spin and Space-Time.” Physical Review A 50, no. 3 (1994): 2564–68. https://doi.org/10.1103/PhysRevA.50.2564.

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©1994 American Physical Society

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UMBC Quantum Optics Laboratory

Abstract

A single light beam, generated by type-II down-conversion, is split by a beam splitter. When a set of quartz plates is inserted into the single beam, the coincidence counting rate between the split beams exhibits a 100% frequency-beating modulation. This nonclassical phenomena is a manifestation of a two-photon entangled state in which the two-particle state is entangled simultaneously in spin and space-time.