High sensitivity magnetic imaging using an array of spins in diamond

Abstract

We present a solid state magnetic field imaging technique using a two dimensional array of spins in diamond. The magnetic sensing spin array is made of nitrogen-vacancy (NV) centers created at shallow depths. Their optical response is used for measuring external magnetic fields in close proximity. Optically detected magnetic resonance (ODMR) is readout from a 60x60 $\mu$m field of view in a multiplexed manner using a CCD camera. We experimentally demonstrate full two-dimensional vector imaging of the magnetic field produced by a pair of current carrying micro-wires. The presented widefield NV magnetometer offers in addition to its high magnetic sensitivity of 20 nT/$\sqrt{Hz}$ and vector reconstruction, an unprecedented spatio-temporal resolution and functionality at room temperature.

References in corpus (6)

• High-sensitivity diamond magnetometer with nanoscale resolution
• High nitrogen-vacancy density diamonds for magnetometry applications
• Scanning magnetic field microscope with a diamond single-spin sensor
• High sensitivity magnetic imaging using an array of spins in diamond
• Universal enhancement of the optical readout fidelity of single electron spins
• Sensing of Fluctuating Nanoscale Magnetic Fields Using NV Centres in Diamond

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