Deterministic generation of entanglement in a quantum network by coherent absorption of a single photon

Vetlugin, Anton, Guo, Ruixiang, Soci, Cesare and Zheludev, Nikolai (2022) Deterministic generation of entanglement in a quantum network by coherent absorption of a single photon. Physical Review A, 106 (1), [012402]. (doi:10.1103/PhysRevA.106.012402).

Record type: Article

Abstract

Advanced quantum information protocols rely on the operation of multinodal quantum networks where entanglement is distributed across the nodes. Existing protocols of entanglement generation are probabilistic, with the efficiency dropping exponentially with the size of the system. We formulate an approach for the deterministic generation of entangled states of a multinodal quantum network of arbitrary size by coupling a single photon standing wave with the nodes of the network. We show experimentally how this can be implemented in a simple binodal system. Since this approach relies on collective excitation of the network—not on local interaction with individual nodes—it allows generation of entanglement with unitary efficiency, independent of the size and the nature of the network.

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Accepted/In Press date: 6 May 2022

Published date: 5 July 2022

Additional Information: Funding Information: The authors are grateful to Mile Gu for fruitful discussion. This work was supported by the Singapore Ministry of Education [Grant No. MOE2016-T3-1-006 (S)], the Quantum Engineering Programme of the Singapore National Research Foundation (QEP-P1 and QEP2-01-P01), and the UK's Engineering and Physical Sciences Research Council (Grant No. EP/M009122/1). Publisher Copyright: © 2022 American Physical Society.

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