Multimode interferometry for entangling atoms in quantum networks

Thomas D. Barrett, Allison Rubenok, Dustin Stuart, Oliver Barter, Annemarie Holleczek, Jerome Dilley, Peter B.R. Nisbet-Jones, Konstantinos Poulios, Graham D. Marshall, Jeremy L. O'Brien, Alberto Politi, Jonathan C.F. Matthews, Axel Kuhn

Research output: Contribution to journalArticle

Abstract

We bring together a cavity-enhanced light-matter interface with a multimode interferometer (MMI) integrated onto a photonic chip and demonstrate the potential of such hybrid systems to tailor distributed entanglement in a quantum network. The MMI is operated with pairs of narrowband photons produced a priori deterministically from a single 87Rb atom strongly coupled to a high-finesse optical cavity. Non-classical coincidences between photon detection events show no loss of coherence when interfering pairs of these photons through the MMI in comparison to the two-photon visibility directly measured using Hong-Ou-Mandel interference on a beam splitter. This demonstrates the ability of integrated multimode circuits to mediate the entanglement of remote stationary nodes in a quantum network interlinked by photonic qubits.

Original languageEnglish
Article number025008
JournalQuantum Science and Technology
Volume4
Issue number2
DOIs
Publication statusPublished - 20 Feb 2019
Externally publishedYes

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