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An integrated nanophotonic quantum register based on silicon-vacancy spins in diamond

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arxiv 1907.13200 v2 pith:CVI3M4HZ submitted 2019-07-30 quant-ph

C. T. Nguyen , D. D. Sukachev , M. K. Bhaskar , B. Machielse , D. S. Levonian , E. N. Knall , P. Stroganov , C. Chia
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M. J. Burek R. Riedinger H. Park M. Lončar M. D. Lukin
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classification quant-ph
keywords spinquantumtechniquesdiamonddiscussintegratednearbynetwork
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We realize an elementary quantum network node consisting of a silicon-vacancy (SiV) color center inside a diamond nanocavity coupled to a nearby nuclear spin with 100 ms long coherence times. Specifically, we describe experimental techniques and discuss effects of strain, magnetic field, microwave driving, and spin bath on the properties of this 2-qubit register. We then employ these techniques to generate Bell-states between the SiV spin and an incident photon as well as between the SiV spin and a nearby nuclear spin. We also discuss control techniques and parameter regimes for utilizing the SiV-nanocavity system as an integrated quantum network node.

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Cited by 2 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Experimental demonstration of memory-enhanced quantum communication

    quant-ph 2019-09 conditional novelty 8.0 of 10

    A single silicon-vacancy spin in a diamond nanocavity performs asynchronous Bell-state measurements, more than quadrupling the secret key rate of measurement-device-independent quantum key distribution over direct tra...

  2. High-Fidelity Control of a Strongly Coupled Electro-Nuclear Spin-Photon Interface

    quant-ph 2025-05 conditional novelty 7.0 of 10

    A zero-field protocol for 117SnV- color centers keeps the nuclear memory qubit insensitive to optical excitation, demonstrated with high-fidelity microwave control in a photonic integrated circuit.

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