Rapidly enhanced spin polarization injection in an optically pumped spin
ratchet
- URL: http://arxiv.org/abs/2112.07223v3
- Date: Thu, 18 Aug 2022 19:30:54 GMT
- Title: Rapidly enhanced spin polarization injection in an optically pumped spin
ratchet
- Authors: Adrisha Sarkar, Brian Blankenship, Emanuel Druga, Arjun Pillai, Ruhee
Nirodi, Siddharth Singh, Alexander Oddo, Paul Reshetikhin, Ashok Ajoy
- Abstract summary: We report on a strategy to boost the spin injection rate by exploiting electrons that can be rapidly polarized.
We demonstrate this in a model system of Nitrogen Vacancy center electrons injecting polarization into a bath of 13C nuclei in diamond.
Through a spin-ratchet polarization transfer mechanism, we show boosts in spin injection rates by over two orders of magnitude.
- Score: 49.1301457567913
- License: http://creativecommons.org/licenses/by/4.0/
- Abstract: Rapid injection of spin polarization into an ensemble of nuclear spins is a
problem of broad interest, spanning dynamic nuclear polarization (DNP) to
quantum information science. We report on a strategy to boost the spin
injection rate by exploiting electrons that can be rapidly polarized via
high-power optical pumping. We demonstrate this in a model system of Nitrogen
Vacancy center electrons injecting polarization into a bath of 13C nuclei in
diamond. We deliver >20W of continuous, nearly isotropic, optical power to the
sample, constituting a substantially higher power than in previous experiments.
Through a spin-ratchet polarization transfer mechanism, we show boosts in spin
injection rates by over two orders of magnitude. Our experiments elucidate
bottlenecks in the DNP process caused by rates of electron polarization,
polarization transfer to proximal nuclei, and spin diffusion. This work
demonstrates opportunities for rapid spin injection employing non-thermally
generated electron polarization, and has relevance to a broad class of
experimental systems including in DNP, quantum sensing, and spin-based MASERs.
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