Quantum Logic with Cavity Photons from Single Atoms

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

*Corresponding author for this work

Research output: Contribution to journalArticle (Academic Journal)peer-review

7 Citations (Scopus)
295 Downloads (Pure)

Abstract

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
Number of pages5
JournalPhysical Review Letters
Volume117
Issue number2
Early online date8 Jul 2016
DOIs
Publication statusPublished - 8 Jul 2016

Structured keywords

  • QETLabs
  • Bristol Quantum Information Institute

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