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Optical Polarization of Nuclear Spins in Silicon Carbide
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- Falk, Abram L. (author)
- University of Chicago, IL 60637 USA; IBM TJ Watson Research Centre, NY 10598 USA
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- Klimov, Paul V. (author)
- University of Chicago, IL 60637 USA; University of Calif Santa Barbara, CA 93106 USA; Hungarian Academic Science, Hungary
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- Ivády, Viktor (author)
- Linköpings universitet,Teoretisk Fysik,Tekniska fakulteten,Institute for Solid State Physics and Optics, Wigner Research Centre for Physics, Hungarian Academy of Sciences, Hungary
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- American Physical Society, 2015
- 2015
- English.
- In: Physical Review Letters. - : American Physical Society. - 0031-9007 .- 1079-7114. ; 114:24, s. 247603-
- Journal article (peer-reviewed)
Abstract
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- We demonstrate optically pumped dynamic nuclear polarization of Si-29 nuclear spins that are strongly coupled to paramagnetic color centers in 4H- and 6H-SiC. The 99% +/- 1% degree of polarization that we observe at room temperature corresponds to an effective nuclear temperature of 5 mu K. By combining ab initio theory with the experimental identification of the color centers optically excited states, we quantitatively model how the polarization derives from hyperfine-mediated level anticrossings. These results lay a foundation for SiC-based quantum memories, nuclear gyroscopes, and hyperpolarized probes for magnetic resonance imaging.
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- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
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- Falk, Abram L.
- Klimov, Paul V.
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