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Multimode interferometry for entangling atoms in quantum networks

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.
Publication status:
Published
Peer review status:
Peer reviewed

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Publisher copy:
10.1088/2058-9565/aafaba

Authors


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Institution:
University of Oxford
Division:
MPLS Division
Department:
Physics
Sub department:
Atomic & Laser Physics
Role:
Author
ORCID:
0000-0001-6241-3028


Publisher:
IOP Publishing
Journal:
Quantum Science and Technology More from this journal
Volume:
4
Issue:
2
Publication date:
2019-02-20
Acceptance date:
2018-12-21
DOI:
ISSN:
2058-9565


Pubs id:
pubs:972995
UUID:
uuid:e5497035-c741-4336-9569-eb5f0f060b70
Local pid:
pubs:972995
Source identifiers:
972995
Deposit date:
2019-02-14

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