Field programmable spin arrays for scalable quantum repeaters

Hanfeng Wang, Matthew E. Trusheim (), Laura Kim, Hamza Raniwala and Dirk R. Englund ()
Additional contact information
Hanfeng Wang: M.I.T.
Matthew E. Trusheim: M.I.T.
Laura Kim: M.I.T.
Hamza Raniwala: M.I.T.
Dirk R. Englund: M.I.T.

Nature Communications, 2023, vol. 14, issue 1, 1-9

Abstract: Abstract The large scale control over thousands of quantum emitters desired by quantum network technology is limited by the power consumption and cross-talk inherent in current microwave techniques. Here we propose a quantum repeater architecture based on densely-packed diamond color centers (CCs) in a programmable electrode array, with quantum gates driven by electric or strain fields. This ‘field programmable spin array’ (FPSA) enables high-speed spin control of individual CCs with low cross-talk and power dissipation. Integrated in a slow-light waveguide for efficient optical coupling, the FPSA serves as a quantum interface for optically-mediated entanglement. We evaluate the performance of the FPSA architecture in comparison to a routing-tree design and show an increased entanglement generation rate scaling into the thousand-qubit regime. Our results enable high fidelity control of dense quantum emitter arrays for scalable networking.

Date: 2023
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DOI: 10.1038/s41467-023-36098-8

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