Abstract
A key to ultra-long electron spin memory in quantum dots (QDs) at zero magnetic field is polarization of the nuclei, such that the electron spin is stabilized along the nuclear magnetic field. We demonstrate that spin-polarized electrons in n-doped QDs align the nuclear field via hyperfine interaction. A feedback onto the electrons occurs, leading to stabilization of polarization, for which spin memory is retained over 0.2 seconds. (C) 2006 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
Original language | English |
---|---|
Pages (from-to) | 3922-3927 |
Number of pages | 6 |
Journal | physica status solidi (b) |
Volume | 243 |
Issue number | 15 |
DOIs | |
Publication status | Published - Dec 2006 |
Research Groups and Themes
- Photonics and Quantum