Quantum Logic with Cavity Photons From Single Atoms

We demonstrate quantum logic using narrow linewidth photons that are produced with an a priori nonprobabilistic scheme from a single ^{87}Rb atom strongly coupled to a high-finesse cavity. We use a controlled-not gate integrated into a photonic chip to entangle these photons, and we observe nonclass...

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Bibliographic Details
Published in:	Physical review letters Vol. 117; no. 2; p. 023602
Main Authors:	Holleczek, Annemarie, Barter, Oliver, Rubenok, Allison, Dilley, Jerome, Nisbet-Jones, Peter B R, Langfahl-Klabes, Gunnar, Marshall, Graham D, Sparrow, Chris, O'Brien, Jeremy L, Poulios, Konstantinos, Kuhn, Axel, Matthews, Jonathan C F
Format:	Journal Article
Language:	English
Published:	United States 08-07-2016
Subjects:	Chips Correlation Gates Holes Joining Logic Photonics Photons
Online Access:	Get full text
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Summary:	We demonstrate quantum logic using narrow linewidth photons that are produced with an a priori nonprobabilistic scheme from a single ^{87}Rb atom strongly coupled to a high-finesse cavity. We use a controlled-not gate integrated into a photonic chip to entangle these photons, and we observe nonclassical correlations between photon detection events separated by periods exceeding the travel time across the chip by 3 orders of magnitude. This enables quantum technology that will use the properties of both narrow-band single photon sources and integrated quantum photonics.
Bibliography:	ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23
ISSN:	0031-9007 1079-7114
DOI:	10.1103/PhysRevLett.117.023602