Quantum Logic with Cavity Photons from Single Atoms

Annemarie Holleczek, Oliver Barter, Allison Rubenok, Jerome Dilley, Peter B.R. Nisbet-Jones, Gunnar Langfahl-Klabes, Graham D. Marshall, Chris Sparrow, Jeremy L. O'Brien, Konstantinos Poulios, Axel Kuhn, Jonathan C.F. Matthews

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We demonstrate quantum logic using narrow linewidth photons that are produced with an a priori nonprobabilistic scheme from a single Rb87 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.

Original languageEnglish
Article number023602
JournalPhysical Review Letters
Issue number2
Publication statusPublished - 8 Jul 2016
Externally publishedYes


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