New High-Intensity Source of Polarization-Entangled Photon Pairs

19953,063 citationsJournal Articlebronze Open Access

Authors

Paul G. Kwiat · Universität Innsbruck

Klaus Mattle · Universität Innsbruck

Harald Weinfurter · Universität Innsbruck

Anton Zeilinger · Universität Innsbruck

Alexander V. Sergienko · University of Maryland, Baltimore County

Yanhua Shih · University of Maryland, Baltimore County

Abstract

We report on a high-intensity source of polarization-entangled photon pairs with high momentum definition. Type-II noncollinear phase matching in parametric down conversion produces true entanglement: No part of the wave function must be discarded, in contrast to previous schemes. With two-photon fringe visibilities in excess of 97%, we demonstrated a violation of Bell's inequality by over 100 standard deviations in less than 5 min. The new source allowed ready preparation of all four of the EPR-Bell states.

Topics & Keywords

Quantum Mechanics and Applications Quantum Information and Cryptography Molecular spectroscopy and chirality

Publication Details

Published in: Physical Review Letters

Volume 75, Issue 24, pp. 4337-4341

DOI: 10.1103/physrevlett.75.4337

Field-Weighted Citation Impact: 13.43

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New High-Intensity Source of Polarization-Entangled Photon Pairs

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Abstract

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Publication Details