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Low-field microwave-mediated optical hyperpolarization in optically pumped diamond.

A Ajoy¹, A Sarkar¹, E Druga¹

¹Department of Chemistry, University of California, Berkeley, Berkeley, CA 94720, USA.

Journal of Magnetic Resonance (San Diego, Calif. : 1997)

|September 26, 2021

Summary

This summary is machine-generated.

Room-temperature hyperpolarization of carbon-13 nuclei in diamond is achieved using optically pumped nitrogen vacancy (NV) centers. This method, particularly effective at low magnetic fields, enables new applications in materials science and quantum technologies.

Keywords:

NV centers in diamond Optical DNP Optical pumping

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Area of Science:

Quantum Optics
Solid-State Physics
Materials Science

Background:

Nitrogen vacancy (NV) defect centers in diamond are optically polarizable electronic spins.
NV centers offer new possibilities for dynamic nuclear polarization (DNP).

Purpose of the Study:

To review methods for room-temperature hyperpolarization of lattice ¹³C nuclei using optically pumped NV centers.
To focus on polarization transfer via rotating-frame level anti-crossings.
To detail methods for high-resolution NV electron spin resonance (ESR) spectra via hyperpolarization readout.

Main Methods:

Optical pumping of NV centers in diamond.
Polarization transfer via rotating-frame level anti-crossings.
Hyperpolarization readout for NV ESR spectra.

Main Results:

Demonstration of room-temperature hyperpolarization of ¹³C nuclei.
Special features of optical DNP at low-field, including suitability for randomly oriented diamond nanoparticles.
Indirect acquisition of high-resolution NV ESR spectra.

Conclusions:

Optically generated ¹³C hyperpolarization using NV centers has significant potential.
The described mechanisms open perspectives for novel applications in quantum sensing and materials characterization.