Ranjan V, de Lange G, Schutjens R, Debelhoir T, Groen JP, Szombati D, Thoen DJ, Klapwijk TM, Hanson R, DiCarlo L. Probing dynamics of an electron-spin ensemble via a superconducting resonator.
Phys Rev Lett 2013;
110:067004. [PMID:
23432295 DOI:
10.1103/physrevlett.110.067004]
[Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/27/2012] [Indexed: 06/01/2023]
Abstract
We study spin relaxation and diffusion in an electron-spin ensemble of nitrogen impurities in diamond at low temperature (0.25-1.2 K) and polarizing magnetic field (80-300 mT). Measurements exploit field-controlled coupling of the ensemble to two modes of a transmission-line resonator. The observed temperature-independent spin relaxation time indicates that spin outdiffusion across the mode volume dominates over spin-lattice relaxation. Depolarization of one hyperfine-split subensemble by pumping of another indicates fast cross relaxation, with implications for the use of subensembles as independent quantum memories.
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