Optical Pumping of Quantum-Dot Nuclear Spins
- 3 July 2003
- journal article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 91 (1) , 017402
- https://doi.org/10.1103/physrevlett.91.017402
Abstract
Hyperfine interactions with randomly oriented nuclear spins present a fundamental decoherence mechanism for electron spin in a quantum dot, that can be suppressed by polarizing the nuclear spins. Here, we analyze an all-optical scheme that uses hyperfine interactions to implement laser cooling of quantum-dot nuclear spins. The limitation imposed on spin cooling by the dark states for collective spin relaxation can be overcome by modulating the electron wave function.Keywords
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