Ultra-sensitive Diamond Magnetometry Using Optimal Dynamic Decoupling

Abstract

New magnetometry techniques based on Nitrogen Vacancy (NV) defects in diamond have received much attention of late as a means to probe nanoscale magnetic environments. The sensitivity of a single NV magnetometer is primarily determined by the transverse spin relaxation time, $T_2$. Current approaches to improving the sensitivity employ crystals with a high NV density at the cost of spatial resolution, or extend $T_2$ via the manufacture of novel isotopically pure diamond crystals. We adopt a complementary approach, in which optimal dynamic decoupling techniques extend coherence times out to the self-correlation time of the spin bath. This suggests single spin, room temperature magnetometer sensitivities as low as 5\,pT\,Hz${}^{-1/2}$ with current technology.

4 pages, 3 figures

References in corpus (11)

• High-sensitivity diamond magnetometer with nanoscale resolution
• Fault-Tolerant Quantum Dynamical Decoupling
• Scanning magnetic field microscope with a diamond single-spin sensor
• Coherence of single spins coupled to a nuclear spin bath of varying density
• Performance of Deterministic Dynamical Decoupling Schemes: Concatenated and Periodic Pulse Sequences
• Universal enhancement of the optical readout fidelity of single electron spins
• Sensing of Fluctuating Nanoscale Magnetic Fields Using NV Centres in Diamond
• Decay of Rabi oscillations by dipolar-coupled dynamical spin environments
• Concatenated dynamical decoupling in a solid-state spin bath
• Rigorous Bounds for Optimal Dynamical Decoupling
• Efficient Coherent Control by Optimized Sequences of Pulses of Finite Duration

Cited by in corpus (44)

• The nitrogen-vacancy colour centre in diamond
• Sensing electric fields using single diamond spins
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• Theory of the ground state spin of the NV- center in diamond: II. Spin solutions, time-evolution, relaxation and inhomogeneous dephasing
• Extending Quantum Coherence in Diamond
• Magnetic spin imaging under ambient conditions with sub-cellular resolution
• Detection and control of individual nuclear spins using a weakly coupled electron spin
• Dynamical Decoupling of a single electron spin at room temperature
• The negatively charged nitrogen-vacancy centre in diamond: the electronic solution
• Robust dynamical decoupling
• Single Ion Quantum Lock-In Amplifier
• Sensing distant nuclear spins with a single electron spin
• Single-spin magnetometry with multi-pulse sensing sequences
• Monitoring Ion Channel Function In Real Time Through Quantum Decoherence
• Robust Dynamic Hamiltonian Engineering of Many-Body Spin Systems
• Optimal pulse spacing for dynamical decoupling in the presence of a purely-dephasing spin-bath
• Ultrasensitive Magnetometer Using a Single Atom
• All-optical sensing of a single-molecule electron spin
• Time-resolved magnetic sensing with electronic spins in diamond
• Ambient Nanoscale Sensing with Single Spins Using Quantum Decoherence
• Nanoscale magnetometry using a single spin system in diamond
• Uncovering many-body correlations in nanoscale nuclear spin baths by central spin decoherence
• Keeping a Single Qubit Alive by Experimental Dynamic Decoupling
• Optimisation of a diamond nitrogen vacancy centre magnetometer for sensing of biological signals
• Singlet levels of the NV${}^{-}$ centre in diamond
• Germanium Vacancy in Diamond Quantum Memory Exceeding 20 ms
• Single molecule NMR detection and spectroscopy using single spins in diamond
• Effects of time reversal symmetry in dynamical decoupling
• Three-level spin system under decoherence-minimizing driving fields: Application to nitrogen-vacancy spin dynamics
• Dephasing-assisted parameter estimation in the presence of dynamical decoupling
• Nano-NMR based flow meter
• Quantum spectroscopy of single spins assisted by a classical clock
• Faraday rotation echo spectroscopy and detection of quantum fluctuations
• Atomic Quadrupole Moment Measurement Using Dynamic Decoupling
• Optimized Dynamical Decoupling Sequences in Protecting Two-Qubit States
• Surface effects on nitrogen vacancy centers neutralization in diamond
• Precise Spectroscopy of High-Frequency Oscillating Fields with a Single-Qubit Sensor
• Wavelet-based fast time-resolved magnetic sensing with electronic spins in diamond
• Sub-micron spin-based magnetic field imaging with an organic light emitting diode
• Coherent control of an NV${}^{-}$ center with one adjacent 13C
• Floquet engineering using pulse driving in a diamond two-level system under a large-amplitude modulation
• Measurements of spin-coherence in NV centers for diamond-based quantum sensors
• Macroscopic emulation of microscopic magnetic particle systems
• Quantum sensing in the fractional Fourier domain