McCamey, DR;
van Tol, J;
Morley, GW;
Boehme, C;
(2009)
Fast Nuclear Spin Hyperpolarization of Phosphorus in Silicon.
PHYS REV LETT
, 102
(2)
, Article 027601. 10.1103/PhysRevLett.102.027601.
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Abstract
We experimentally demonstrate a method for obtaining nuclear spin hyperpolarization, that is, polarization significantly in excess of that expected at thermal equilibrium. By exploiting a nonequilibrium Overhauser process, driven by white light irradiation, we obtain more than 68% negative nuclear polarization of phosphorus donors in silicon. This polarization is reached with a time constant of similar to 150 sec, at a temperature of 1.37 K and a magnetic field of 8.5 T. The ability to obtain such large polarizations is discussed with regards to its significance for quantum information processing and magnetic resonance imaging.
| Type: | Article |
|---|---|
| Title: | Fast Nuclear Spin Hyperpolarization of Phosphorus in Silicon |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/PhysRevLett.102.027601 |
| Publisher version: | http://dx.doi.org/10.1103/PhysRevLett.102.027601 |
| Language: | English |
| Additional information: | © 2009 The American Physical Society |
| Keywords: | POLARIZATION |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences |
| URI: | https://discovery-pp.ucl.ac.uk/id/eprint/135983 |
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