Quantum entanglement swapping with spontaneous parametric down-conversion

Two remote parties that have never interacted each other can be entangled through entanglement swapping operation done by a third party. Currently existing entanglement swapping experiments are done probabilistically by postselection, i.e., once a successful swapping is verified, the resultant entan...

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Bibliographic Details
Published in:Physical review. A, Atomic, molecular, and optical physics Atomic, molecular, and optical physics, 2004-01, Vol.69 (1), Article 014303
Main Authors: Wang, Xiang-Bin, Shi, B. S., Tomita, A., Matsumoto, K.
Format: Article
Language:English
Subjects:
ATOMIC AND MOLECULAR PHYSICS
CONVERSION
CORRELATIONS
ENERGY LEVELS
OPERATION
OPTICS
PHOTONS
QUANTUM MECHANICS
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Summary:Two remote parties that have never interacted each other can be entangled through entanglement swapping operation done by a third party. Currently existing entanglement swapping experiments are done probabilistically by postselection, i.e., once a successful swapping is verified, the resultant entanglement is destructed. We propose a simple nonpostselection scheme to demonstrate the high-quality quantum entanglement swapping with the spontaneous parametric down-conversion process. Our scheme only requires the normal photon detectors which only distinguish the vacuum and nonvacuum Fock states.
ISSN:1050-2947
1094-1622
DOI:10.1103/PhysRevA.69.014303