Optical Detection and Manipulation of Single Electron Spin Coherence in a Semiconductor Quantum Dot
Author | : Maiken Sophia Høgh Mikkelsen |
Publisher | : |
Total Pages | : 336 |
Release | : 2009 |
ISBN-10 | : 1109608438 |
ISBN-13 | : 9781109608434 |
Rating | : 4/5 (38 Downloads) |
Book excerpt: As an alternative system for single spin control, few Mn-ion spins in a GaAs quantum well were measured using polarized photoluminescence. A new mechanism for optically addressing and controlling small numbers of magnetic ions in semiconductors is demonstrated without the need for magnetic fields or magnetic materials. The polarized Mn-spins precess in a transverse magnetic field enabling Hanle measurements of the spin lifetimes. The observed Mn-ion spin lifetimes reach promising timescales in the low doping limit, demonstrating that individual magnetic spins in a solid are useful systems for coherent manipulation of spin information.