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

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 d...

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Bibliographic Details
Published in:arXiv.org 2019-08
Main Authors: Nguyen, C T, Sukachev, D D, Bhaskar, M K, Machielse, B, Levonian, D S, Knall, E N, Stroganov, P, Chia, C, Burek, M J, Riedinger, R, Park, H, Lončar, M, Lukin, M D
Format: Article
Language:English
Subjects:
Color centers
Diamonds
Magnetic properties
Nuclear spin
Qubits (quantum computing)
Silicon
Vacancies
Online Access:Get full text
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Summary: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.
ISSN:2331-8422
DOI:10.48550/arxiv.1907.13200