Coherence of a charge stabilised tin-vacancy spin in diamond

Abstract

Quantum information processing (QIP) with solid state spin qubits strongly depends on the efficient initialisation of the qubit's desired charge state. While the negatively charged tin-vacancy (${\text{SnV}}^{-}$) centre in diamond has emerged as an excellent platform for realising QIP protocols due to long spin coherence times at liquid helium temperature and lifetime limited optical transitions, its usefulness is severely limited by termination of the fluorescence under resonant excitation [1,2,3]. Here, we unveil the underlying charge cycle of group IV-vacancy (G4V) centres and exploit it to demonstrate highly efficient initialisation of the desired negative charge state of single SnV centres while preserving long term stable optical resonances. We furthermore all-optically probe the coherence of the ground state spins by means of coherent population trapping and find a spin dephasing time of 5$\mu$s. Additionally, we demonstrate proof-of-principle single shot spin state readout without the necessity of a magnetic field aligned to the symmetry axis of the defect.

References in corpus (11)

• Realization of a multi-node quantum network of remote solid-state qubits
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• Tin-Vacancy Quantum Emitters in Diamond
• All-optical control of the silicon-vacancy spin in diamond at millikelvin temperatures
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• Coupling of a Single Tin-vacancy Center to a Photonic Crystal Cavity in Diamond
• Quantum control of the tin-vacancy spin qubit in diamond
• Narrow-linewidth tin-vacancy centers in a diamond waveguide
• Optical switching of resonance fluorescence from a single germanium vacancy color center in diamond
• A cavity-based optical antenna for color centers in diamond
• Probing charge dynamics in diamond with an individual color center

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• Coherent microwave, optical, and mechanical quantum control of spin qubits in diamond
• Single-Shot Readout and Weak Measurement of a Tin-Vacancy Qubit in Diamond
• Fast optoelectronic charge state conversion of silicon vacancies in diamond
• Na in Diamond: High Spin Defects Revealed by the ADAQ High-Throughput Computational Database
• Heralded initialization of charge state and optical transition frequency of diamond tin-vacancy centers
• Quantum Electrometer for Time-Resolved Material Science at the Atomic Lattice Scale
• Wavelength dependence of nitrogen-vacancy center charge cycling
• Optimizing the Electrical Interface for Large-Scale Color-Center Quantum Processors
• Laser-induced spectral diffusion and excited-state mixing of silicon T centres
• Scalable construction of hybrid quantum photonic cavities
• SUPER and femtosecond spin-conserving coherent excitation of a tin-vacancy color center in diamond
• 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
• Optical Switching of ${\chi }^{(2)}$ in Diamond Photonics
• Optical probing of phononic properties of a tin-vacancy color center in diamond
• High-fidelity control of a ${}^{13}$C nuclear spin coupled to a tin-vacancy center in diamond
• Above-Unity Coherent Cooperativity of Tin-Vacancy Centers in Diamond Photonic Crystal Cavities
• Spin-photon Qubits for Scalable Quantum Network