Magnetic-field-dependent photodynamics of single NV defects in diamond: an application to qualitative all-optical magnetic imaging
Top Cited Papers
Open Access
- 1 October 2012
- journal article
- research article
- Published by IOP Publishing in New Journal of Physics
- Vol. 14 (10)
- https://doi.org/10.1088/1367-2630/14/10/103033
Abstract
Magnetometry and magnetic imaging with nitrogen-vacancy (NV) defects in diamond rely on the optical detection of electron spin resonance (ESR). However, this technique is inherently limited to magnetic fields that are weak enough to avoid electron spin mixing. Here, we focus on the high off-axis magnetic field regime where spin mixing alters the NV defect spin dynamics. We first study, in a quantitative manner, the dependence of the NV defect optical properties on the magnetic field vector B. Magnetic-field-dependent time-resolved photoluminescence (PL) measurements are compared to a seven-level model of the NV defect that accounts for field-induced spin mixing. The model reproduces decreases in (i) ESR contrast, (ii) PL intensity and (iii) excited level lifetime with an increasing off-axis magnetic field. We next demonstrate that these effects can be used to perform all-optical imaging of the magnetic field component vertical bar B-perpendicular to vertical bar orthogonal on the NV defect axis. Using a scanning NV defect microscope, we map the stray field of a magnetic hard disc through both PL and fluorescence lifetime imaging. This all-optical method for high magnetic field imaging at the nanoscale might be of interest in the field of nanomagnetism, where samples producing fields in excess of several tens of milliteslas are typically found.Keywords
Other Versions
This publication has 37 references indexed in Scilit:
- Nanoscale magnetic field mapping with a single spin scanning probe magnetometerApplied Physics Letters, 2012
- Coherent Sensing of a Mechanical Resonator with a Single-Spin QubitScience, 2012
- Spin dynamics in the optical cycle of single nitrogen-vacancy centres in diamondNew Journal of Physics, 2011
- Time-averaging within the excited state of the nitrogen-vacancy centre in diamondNew Journal of Physics, 2009
- Excited-state spectroscopy of single NV defects in diamond using optically detected magnetic resonanceNew Journal of Physics, 2009
- Excited-State Spectroscopy Using Single Spin Manipulation in DiamondPhysical Review Letters, 2008
- Scanning magnetic field microscope with a diamond single-spin sensorApplied Physics Letters, 2008
- Quantum Register Based on Individual Electronic and Nuclear Spin Qubits in DiamondScience, 2007
- Single Quantum Dot Coupled to a Scanning Optical Antenna: A Tunable SuperemitterPhysical Review Letters, 2005
- Scanning Confocal Optical Microscopy and Magnetic Resonance on Single Defect CentersScience, 1997