All-optical control of the silicon-vacancy spin in diamond at millikelvin temperatures

Abstract

The silicon-vacancy center in diamond offers attractive opportunities in quantum photonics due to its favorable optical properties and optically addressable electronic spin. Here, we combine both to achieve all-optical coherent control of its spin states. We utilize this method to explore spin dephasing effects in an impurity-rich sample beyond the limit of phonon-induced decoherence: Employing Ramsey and Hahn-echo techniques at 12mK base temperature we identify resonant coupling to a substitutional nitrogen spin bath as the limiting decoherence source for the electron spin.

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• Diamond Integrated Quantum Photonics: A Review
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• Multidimensional cluster states using a single spin-photon interface coupled strongly to an intrinsic nuclear register
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• Indirect Control of the ${}^{29}\mathrm{Si}{\mathrm{V}}^{-}$ Nuclear Spin in Diamond
• Quantum computation in silicon-vacancy centers based on nonadiabatic geometric gates protected by dynamical decoupling
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• Predictive tracking of the NV Center based on external temperature sensors
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• From Heat Capacity to Coherence in Ultra-Narrow-Linewidth Solid-State Optical Emitters at Sub-Kelvin Temperatures
• Quantum Orbital-State Control of a Neutral Nitrogen-Vacancy Center at Millikelvin Temperatures