Electron-to-nuclear spectral mapping via dynamic nuclear polarization
At a Glance
Section titled âAt a Glanceâ| Metadata | Details |
|---|---|
| Publication Date | 2023-10-16 |
| Journal | The Journal of Chemical Physics |
| Authors | Arjun Pillai, Moniish Elanchezhian, Teemu Virtanen, Sophie Conti, Ashok Ajoy |
| Institutions | University of California, Berkeley, Canadian Institute for Advanced Research |
| Citations | 3 |
Abstract
Section titled âAbstractâWe report on a strategy to indirectly read out the spectrum of an electronic spin via polarization transfer to nuclear spins in its local environment. The nuclear spins are far more abundant and have longer lifetimes, allowing for repeated polarization accumulation in them. Subsequent nuclear interrogation can reveal information about the electronic spectral density of states. We experimentally demonstrate the method by reading out the ESR spectrum of nitrogen vacancy center electrons in diamond via readout of lattice 13C nuclei. Spin-lock control on the 13C nuclei yields a significantly enhanced signal-to-noise ratio for the nuclear readout. Spectrally mapped readout presents operational advantages in being background-free and immune to crystal orientation and optical scattering. We harness these advantages to demonstrate applications in underwater magnetometry. The physical basis for the âone-to-manyâ spectral map is itself intriguing. To uncover its origin, we develop a theoretical model that maps the system dynamics, involving traversal of a cascaded structure of Landau-Zener anti-crossings, to the operation of a tilted âGalton board.â This work points to new opportunities for âESR-via-NMRâ in dilute electronic systems and in hybrid electron-nuclear quantum memories and sensors.
Tech Support
Section titled âTech SupportâOriginal Source
Section titled âOriginal SourceâReferences
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