Self-polarization and dynamical cooling of nuclear spins in double quantum dots
Research output: Contribution to journal › Journal article › Research › peer-review
The spin-blockade regime of double quantum dots features coupled dynamics of electron and nuclear spins resulting from the hyperfine interaction. We explain observed nuclear self-polarization via a mechanism based on feedback of the Overhauser shift on electron energy levels, and propose to use the instability toward self-polarization as a vehicle for controlling the nuclear spin distribution. In the dynamics induced by a properly chosen time-dependent magnetic field, nuclear spin fluctuations can be suppressed significantly below the thermal level.
Original language | English |
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Article number | 036602 |
Journal | Physical Review Letters |
Volume | 99 |
Issue number | 3 |
ISSN | 0031-9007 |
DOIs | |
Publication status | Published - 19 Jul 2007 |
Externally published | Yes |
ID: 198614630