Generation of three-photon entangled state by quantum interference between a coherent state and parametric down-conversion

Three-photon entangled states such as a Greenberger-Horne-Zeilinger state can be produced by mixing a weak coherent state with parametric down-conversion. Quantum interference between the two states is responsible for the cancellation of unwanted photon states. Two schemes of interference are consid...

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Bibliographic Details
Published in:Physical review. A, Atomic, molecular, and optical physics Vol. 70; no. 4
Main Authors: Shafiei, F., Srinivasan, P., Ou, Z. Y.
Format: Journal Article
Language:English
Published: United States 01-10-2004
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Summary:Three-photon entangled states such as a Greenberger-Horne-Zeilinger state can be produced by mixing a weak coherent state with parametric down-conversion. Quantum interference between the two states is responsible for the cancellation of unwanted photon states. Two schemes of interference are considered and both are shown to produce the entangled state.
ISSN:1050-2947
1094-1622
DOI:10.1103/PhysRevA.70.043803