Nuclear Quantum-Assisted Magnetometer

Abstract

Magnetic sensing and imaging instruments are important tools in biological and material sciences. There is an increasing demand for attaining higher sensitivity and spatial resolution, with implementations using a single qubit offering potential improvements in both directions. In this article we describe a scanning magnetometer based on the nitrogen-vacancy center in diamond as the sensor. By means of a quantum-assisted readout scheme together with advances in photon collection efficiency, our device exhibits an enhancement in signal to noise ratio of close to an order of magnitude compared to the standard fluorescence readout of the nitrogen-vacancy center. This is demonstrated by comparing non-assisted and assisted methods in a $T_1$ relaxation time measurement.

Accepted version

References in corpus (20)

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Cited by in corpus (18)

• Sensitivity Optimization for NV-Diamond Magnetometry
• Spin Readout Techniques of the Nitrogen-Vacancy Center in Diamond
• Nanoscale electric-field imaging based on a quantum sensor and its charge-state control under ambient condition
• Nanoscale imaging of current density with a single-spin magnetometer
• Bayesian estimation for quantum sensing in the absence of single-shot detection
• Adaptive tracking of a time-varying field with a quantum sensor
• Roadmap on Nanoscale Magnetic Resonance Imaging
• Protecting Quantum Information via Destructive Interference of Correlated Noise
• Quantum sensing and control of spin state dynamics in the radical pair mechanism
• Optimisation of diamond quantum processors
• Quantum control and sensing of nuclear spins by electron spins under power limitations
• Controlling a nuclear spin in a nanodiamond
• Robust Noise Suppression and Quantum Sensing by Continuous Phased Dynamical Decoupling
• High precision single qubit tuning via thermo-magnetic field control
• Anisotropic electron-nuclear interactions in a rotating quantum spin bath
• Real-Time Charge Initialization of Diamond Nitrogen-Vacancy Centers for Enhanced Spin Readout
• Overcoming frequency resolution limits using a solid-state spin quantum sensor
• Large Numbers, the Chinese Remainder Theorem, and the Circle of Fifths