Room-temperature control and electrical readout of individual nitrogen-vacancy nuclear spins

Abstract

Nuclear spins in semiconductors are leading candidates for quantum technologies, including quantum computation, communication, and sensing. Nuclear spins in diamond are particularly attractive due to their extremely long coherence lifetime. With the nitrogen-vacancy (NV) centre, such nuclear qubits benefit from an auxiliary electronic qubit, which has enabled entanglement mediated by photonic links. The transport of quantum information by the electron itself, via controlled transfer to an adjacent centre or via the dipolar interaction, would enable even faster and smaller processors, but optical readout of arrays of such nodes presents daunting challenges due to the required sub-diffraction inter-site distances. Here, we demonstrate the electrical readout of a basic unit of such systems - a single 14N nuclear spin coupled to the NV electron. Our results provide the key ingredients for quantum gate operations and electrical readout of nuclear qubit registers, in a manner compatible with nanoscale electrode structures. This demonstration is therefore a milestone towards large-scale diamond quantum devices with semiconductor scalability.

11 pages, 4 figures

References in corpus (7)

• Quantum Computing
• High-fidelity projective readout of a solid-state spin quantum register
• Unconditional quantum teleportation between distant solid-state qubits
• Dynamic polarization of single nuclear spins by optical pumping of NV color centers in diamond at room temperature
• Optical polarization of nuclear ensembles in diamond
• Enhanced dual-beam excitation photoelectric detection of NV magnetic resonances in diamond
• Spin dynamics of diamond nitrogen-vacancy centres at the ground state level anti-crossing and all-optical low frequency magnetic field sensing

Cited by in corpus (14)

• Single-molecule Scale Magnetic Resonance Spectroscopy using Nitrogen-Vacancy Centers in Diamond
• Photoionization of negatively charged NV centers in diamond: theory and ab initio calculations
• Exploiting ionization dynamics in the nitrogen vacancy center for rapid, high-contrast spin and charge state initialization
• Quantum control of nuclear spin qubits in a rapidly rotating diamond
• Electrical readout microwave-free sensing with diamond
• Defects in Silicon Carbide as Quantum Qubits: Recent Advances in Defect Engineering
• Direct Readout of Nitrogen-Vacancy Hybrid-Spin Quantum Register in Diamond by Photon Arrival Time Analysis
• Room-Temperature Electrical Readout of Spin Defects in van der Waals Materials
• Nanoscale engineering and dynamical stabilization of mesoscopic spin textures
• Tunable phonon-driven magnon-magnon entanglement at room temperature
• Nuclear spin relaxation in solid state defect quantum bits via electron-phonon coupling in their optical excited state
• Photoelectrical detection and characterization of divacancy and PL5-PL7 spins in silicon carbide
• Exact Entanglement Dynamics of Two Spins in Finite Baths
• Theory of single molecule NMR detected by real time ESR