Parallel optically detected magnetic resonance spectrometer for dozens of single nitrogen-vacancy centers using laser-spot lattice

TL;DR

This paper presents a parallel optically detected magnetic resonance spectrometer that enables simultaneous manipulation and readout of dozens of NV centers in diamond, significantly increasing throughput for quantum sensing and imaging.

Contribution

The development of a 20x20 laser-spot lattice system for parallel addressing of NV centers, demonstrating simultaneous measurement of multiple quantum states.

Findings

Observed 80 NV centers in a single field of view.

Measured MR spectra and Rabi oscillations of 18 NV centers in parallel.

Achieved higher speed and throughput compared to traditional confocal methods.

Abstract

We develop a parallel optically detected magnetic resonance (PODMR) spectrometer to address, manipulate and read out an array of single nitrogen-vacancy (NV) centers in diamond in parallel. In this spectrometer, we use an array of micro-lens to generate 20 * 20 laser-spot lattice (LSL) on the objective focal plane, and then align the LSL with an array of single NV centers. The quantum states of NV centers are manipulated by a uniform microwave field from a {\Omega}-shape coplanar coil. As an experimental demonstration, we observe 80 NV centers in the field of view. Among them, magnetic resonance (MR) spectrums and Rabi oscillations of 18 NV centers along the external magnetic field are measured in parallel. These results can be directly used to realize parallel quantum sensing and multiple times speedup compared with the confocal technique. Regarding the nanoscale MR technique, PODMR will be crucial for high throughput single molecular MR spectrum and imaging.