Probing Dynamics of an Electron-Spin Ensemble via a Superconducting Resonator

被引:75
作者
Ranjan, V. [1 ]
de lange, G. [1 ]
Schutjens, R. [1 ]
Debelhoir, T. [2 ]
Groen, J. P. [1 ]
Szombati, D. [1 ]
Thoen, D. J. [1 ]
Klapwijk, T. M. [1 ]
Hanson, R. [1 ]
DiCarlo, L. [1 ]
机构
[1] Delft Univ Technol, Kavli Inst Nanosci, NL-2600 GA Delft, Netherlands
[2] ENS, ICFP, Dept Phys, F-75005 Paris, France
关键词
CROSS-RELAXATION; NITROGEN DEFECTS; DIAMOND; DEPENDENCE; TIMES;
D O I
10.1103/PhysRevLett.110.067004
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
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. DOI: 10.1103/PhysRevLett.110.067004
引用
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页数:5
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