Free induction decay of single spins in diamond

Abstract

We study both theoretically and experimentally the free induction decay (FID) of the electron spin associated with a single nitrogen-vacancy defect in high purity diamond, where the main source of decoherence is the hyperfine interaction with a bath of ${}^{13}$C nuclear spins. In particular, we report a systematic study of the FID signal as a function of the strength of a magnetic field oriented along the symmetry axis of the defect. On average, an increment of the coherence time by a factor of $\sqrt{5/2}$ is observed at high magnetic field in diamond samples with a natural abundance of ${}^{13}$C nuclear spins, in agreement with numerical simulations and theoretical studies. Further theoretical analysis shows that this enhancement is independent of the concentration of nuclear spin impurities. By dividing the nuclear spin bath into shells and cones, we theoretically identify which nuclear spins are responsible for the observed dynamics.

16 pages, 7 figures

References in corpus (19)

• Quantum Computing
• High-sensitivity diamond magnetometer with nanoscale resolution
• Universal dynamical decoupling of a single solid-state spin from a spin bath
• High-fidelity projective readout of a solid-state spin quantum register
• Dynamic polarization of single nuclear spins by optical pumping of NV color centers in diamond at room temperature
• Extending Quantum Coherence in Diamond
• Coherence of Nitrogen-Vacancy Electronic Spin Ensembles in Diamond
• Chip-scale nanofabrication of single spins and spin arrays in diamond
• Theory of electron spin decoherence by interacting nuclear spins in a quantum dot
• Dynamical Decoupling of a single electron spin at room temperature
• Coherence of single spins coupled to a nuclear spin bath of varying density
• Excited-state spectroscopy of single NV defects in diamond using optically detected magnetic resonance
• Electron spin decoherence of single Nitrogen-Vacancy defects in diamond
• Excited-state spectroscopy using single-spin manipulation in diamond
• Singlet-triplet decoherence due to nuclear spins in a double quantum dot
• Pure quantum dephasing of a solid state electron spin qubit in a large nuclear spin bath coupled by long-range hyperfine-mediated interactions
• High resolution spectroscopy of single NV defects coupled with nearby ${}^{13}$C nuclear spins in diamond
• Coherence and control of quantum registers based on electronic spin in a nuclear spin bath
• Spin bath narrowing with adaptive parameter estimation

Cited by in corpus (29)

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• Nanoscale electrometry based on a magnetic-field-resistant spin sensor
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• Longitudinal spin relaxation model applied to point defect qubit systems
• Spin-Controlled Quantum Interference of Levitated Nanorotors
• Probing the dynamics of a nuclear spin bath in diamond through time-resolved central spin magnetometry
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• Reviving the precision of multiple entangled probes in an open system by simple $\pi$-pulse sequences
• Environmentally mediated coherent control of a spin qubit in diamond
• Extending qubit coherence by adaptive quantum environment learning
• Decoherence of Nuclear Spins in the Proximity of Nitrogen Vacancy Centers in Diamond
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• Pulsed Quantum-State Reconstruction of Dark Systems
• Coherent Control of a Long-Lived Nuclear Memory Spin in a Germanium-Vacancy Multi-Qubit Node
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• Scalable nuclear-spin entanglement mediated by a mechanical oscillator
• Characterizing spin-bath parameters using conventional and time-asymmetric Hahn-echo sequences
• Sensing electrochemical signals using a nitrogen-vacancy center in diamond
• Generalized scaling of spin qubit coherence in over 12,000 host materials
• Precession-induced nonclassicality of the free induction decay of NV centers by a dynamical polarized nuclear spin bath
• Unveiling the nonclassicality within quasi-distribution representations through deep learning
• Wavelet-based Ramsey magnetometry enhancement of a single NV center in diamond
• Adaptively partitioned analog quantum simulation on near-term quantum computers: The nonclassical free-induction decay of NV centers in diamond