Microwave Spin Control of a Tin-Vacancy Qubit in Diamond

• DOI: 10.48550/arxiv.2306.13199
• Publication Date: 2023-01-01
• Authors: Eric I. Rosenthal; Christopher P. An...; Hannah C. Kleider...; Abigail Stein; Hope Lee; Jakob Grzesik; Giovanni Scuri; Alison E. Rugar; Daniel Riedel; Shahriar Aghaeime...; Geun Ho Ahn; Kasper Van Gasse; Jelena Vučković
• Keywords: Coherent control; Quantum sensor

The negatively charged tin-vacancy (SnV-) center in diamond is a promising solid-state qubit for applications quantum networking due to its high efficiency, strong zero phonon emission, and reduced sensitivity electrical noise. SnV- has large spin-orbit coupling, which allows long spin lifetimes at elevated temperatures, but unfortunately suppresses the magnetic dipole transitions desired control. Here, by use of naturally strained center, we overcome this limitation achieve high-fidelity microwave We demonstrate pi-pulse fidelity up 99.51+/0.03%$ Hahn-echo coherence time T2echo = 170.0+/-2.8 microseconds, both highest yet reported platform. This performance comes without compromise optical stability, demonstrated 1.7 Kelvin where ample cooling power available mitigate drive induced heating. These results pave way spins be used as building block future technologies.