Multimode interferometry for entangling atoms in quantum networks

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

Abstract

© 2019 IOP Publishing Ltd. 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.

Citation

Barrett, T. D., Rubenok, A., Stuart, D., Barter, O., Holleczek, A., Dilley, J., …Kuhn, A. (2019). Multimode interferometry for entangling atoms in quantum networks. Quantum Science and Technology, 4(2), Article 025008. https://doi.org/10.1088/2058-9565/aafaba

• Journal Article Type: Article
• Acceptance Date: Dec 21, 2018
• Online Publication Date: Feb 20, 2019
• Publication Date: Feb 20, 2019
• Deposit Date: Jul 19, 2019
• Publicly Available Date: Jul 22, 2019
• Journal: Quantum Science and Technology
• Electronic ISSN: 2058-9565
• Publisher: IOP Publishing
• Peer Reviewed: Peer Reviewed
• Volume: 4
• Issue: 2
• Article Number: 025008
• DOI: https://doi.org/10.1088/2058-9565/aafaba
• Keywords: Quantum Physics; Atomic Physics; Optics
• Public URL: https://nottingham-repository.worktribe.com/output/1883123
• Publisher URL: https://iopscience.iop.org/article/10.1088/2058-9565/aafaba
• Additional Information: Journal title: Quantum Science and Technology; Article type: paper; Article title: Multimode interferometry for entangling atoms in quantum networks; Copyright information: © 2019 IOP Publishing Ltd; License information: cc-by Original content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.; Date received: 2018-10-19; Date accepted: 2018-12-21; Online publication date: 2019-02-20
• Contract Date: Jul 22, 2019