Microwave Spin Control of a Tin-Vacancy Qubit in Diamond
arXiv:2306.13199 · doi:10.1103/PhysRevX.13.031022
Abstract
The negatively charged tin-vacancy (SnV-) center in diamond is a promising solid-state qubit for applications in quantum networking due to its high quantum efficiency, strong zero phonon emission, and reduced sensitivity to electrical noise. The SnV- has a large spin-orbit coupling, which allows for long spin lifetimes at elevated temperatures, but unfortunately suppresses the magnetic dipole transitions desired for quantum control. Here, by use of a naturally strained center, we overcome this limitation and achieve high-fidelity microwave spin control. We demonstrate a pi-pulse fidelity of up to 99.51+/0.03%$ and a Hahn-echo coherence time of T2echo = 170.0+/-2.8 microseconds, both the highest yet reported for SnV- platform. This performance comes without compromise to optical stability, and is demonstrated at 1.7 Kelvin where ample cooling power is available to mitigate drive induced heating. These results pave the way for SnV- spins to be used as a building block for future quantum technologies.
Final published version
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- Heralded initialization of charge state and optical transition frequency of diamond tin-vacancy centers
- Large-Range Tuning and Stabilization of the Optical Transition of Diamond Tin-Vacancy Centers by In-Situ Strain Control
- Coherent Control of a Long-Lived Nuclear Memory Spin in a Germanium-Vacancy Multi-Qubit Node
- Efficient Microwave Spin Control of Negatively Charged Group-IV Color Centers in Diamond
- Optimizing the Electrical Interface for Large-Scale Color-Center Quantum Processors
- Control of solid-state nuclear spin qubits using an electron spin-1/2
- Wideband Coherent Microwave Conversion via Magnon Nonlinearity in Hybrid Quantum System
- Lifetime-Limited and Tunable Emission from Charge-Stabilized Nickel Vacancy Centers in Diamond
- Photoactivation of color centers induced by laser irradiation in ion-implanted diamond
- A robust, fiber-coupled scanning probe magnetometer using electron spins at the tip of a diamond nanobeam
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- Above-Unity Coherent Cooperativity of Tin-Vacancy Centers in Diamond Photonic Crystal Cavities
- Software Framework for Optically Accessible Quantum Memory Using Group-IV Color Centers in Diamond