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5 March 2022 Optical interfacing of tin-vacancy spin qubits in diamond
Philipp Fuchs, Johannes Görlitz, Robert Morsch, Dennis Herrmann, Christoph Becher
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Proceedings Volume PC12010, Photonic and Phononic Properties of Engineered Nanostructures XII; PC1201019 (2022) https://doi.org/10.1117/12.2615298
Event: SPIE OPTO, 2022, San Francisco, California, United States
Abstract
Color centers in diamond, specifically the group-IV-vacancy centers, have emerged as promising candidates among solid state qubits. Among these, the tin-vacancy (SnV) center features the optimum combination of long spin coherence time and favorable optical properties. We here investigate the generation of indistinguishable single photons from SnV centers and explore the influence of residual spectral diffusion. To improve the photon collection efficiency we fabricate a planar optical antenna based on two silver mirrors coated on a thin (sub-µm) single crystal diamond membrane. We demonstrate its operation at room and cryogenic temperatures and strong enhancement of the collectible photon rate.
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Philipp Fuchs, Johannes Görlitz, Robert Morsch, Dennis Herrmann, and Christoph Becher "Optical interfacing of tin-vacancy spin qubits in diamond", Proc. SPIE PC12010, Photonic and Phononic Properties of Engineered Nanostructures XII, PC1201019 (5 March 2022); https://doi.org/10.1117/12.2615298
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KEYWORDS
Diamond
Quantum communications
Photons
Single photon
Color centers
Cryogenics
Optical antennas
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