Detecting magnetic fields using Nitrogen-Vacancy Centers

Abstract

We show how nitrogen-vacancy centers can be used to `detect' magnetic fields, that is, to find out whether a magnetic field, about which we may not have complete information, is actually present or not. The solution to this problem comes from quantum state discrimination theory. The effect of decoherence is taken into account to optimize the time over which the nitrogen-vacancy center is allowed to interact with the magnetic field before making a measurement. We also find the optimum measurement that should be performed. We then show how multiple measurements reduce the error in detecting the magnetic field. Finally, a major limitation of the measurement process, namely limited photon detection efficiency, is taken into account. Our proposals should be implementable with current experimental technology.

5 pages + Supplementary Material

References in corpus (34)

• The nitrogen-vacancy colour centre in diamond
• High-sensitivity diamond magnetometer with nanoscale resolution
• Optical Magnetometry
• Dynamical Decoupling of Open Quantum Systems
• Dynamical suppression of decoherence in two-state quantum systems
• Magnetometry with nitrogen-vacancy defects in diamond
• Universal dynamical decoupling of a single solid-state spin from a spin bath
• High-fidelity projective readout of a solid-state spin quantum register
• Optimized Dynamical Decoupling in a Model Quantum Memory
• Extending Quantum Coherence 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
• Quantum theory for electron spin decoherence induced by nuclear spin dynamics in semiconductor quantum computer architectures: Spectral diffusion of localized electron spins in the nuclear solid-state environment
• Decoherence and dynamical decoupling control of nitrogen-vacancy center electron spins in nuclear spin baths
• Quantum many-body theory of qubit decoherence in a finite-size spin bath
• Single-spin magnetometry with multi-pulse sensing sequences
• Electron spin resonance of nitrogen-vacancy centers in optically trapped nanodiamonds
• Sensing of Fluctuating Nanoscale Magnetic Fields Using NV Centres in Diamond
• 3D optical manipulation of a single electron spin
• Cavity-enhanced room-temperature magnetometry using absorption by nitrogen-vacancy centers in diamond
• Enhanced solid-state multi-spin metrology using dynamical decoupling
• Quantum control of proximal spins using nanoscale magnetic resonance imaging
• Comparison of dynamical decoupling protocols for a nitrogen-vacancy center in diamond
• Radio-frequency magnetometry using a single electron spin
• Quantum Decoherence of the Central Spin in a Sparse System of Dipolar Coupled Spins
• Single Electron Spin Decoherence by Nuclear Spin Bath: Linked Cluster Expansion Approach
• Time-resolved magnetic sensing with electronic spins in diamond
• Continuous dynamical decoupling magnetometry
• Magnetometry of random AC magnetic fields using a single Nitrogen-Vacancy center
• Multiple-copy state discrimination: Thinking globally, acting locally
• Reconstructing the Profile of Time-Varying Magnetic Fields With Quantum Sensors
• Minimum-error discrimination between a pure and a mixed two-qubit state
• Optimizing phase estimation algorithms for diamond spin magnetometry
• Dual-channel lock-in magnetometer with a single spin in diamond

Cited by in corpus (6)

• Calibration-Free Vector Magnetometry Using Nitrogen-Vacancy Center in Diamond Integrated with Optical Vortex Beam
• Improving the estimation of environment parameters via initial probe-environment correlations
• Robust population transfer of spin states by geometric formalism
• Continuous dynamical decoupling of spin chains: modulating the spin-environment and spin-spin interactions
• Theory of Single Photon Detection by a Photoreceptive Molecule and a Quantum Coherent Spin Center
• Sensing high-frequency ac fields via a two-qubit sensor