Spins in few-electron quantum dots

Details Spins in few-electron quantum dots Spins in few-electron quantum dots

2006-10-16

arxiv.org/abs/cond-mat/0610433v2

Rev. Mod. Phys. 79, 1217 (2007)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

final version (52 pages, 49 figures), Rev. Mod. Phys

Scientific paper

10.1103/RevModPhys.79.1217

This review describes the physics of spins in quantum dots containing one or two electrons, from an experimentalist's viewpoint. Various methods for extracting spin properties from experiment are presented, restricted exclusively to electrical measurements. Furthermore, experimental techniques are discussed that allow for: (1) the rotation of an electron spin into a superposition of up and down, (2) the measurement of the quantum state of an individual spin and (3) the control of the interaction between two neighbouring spins by the Heisenberg exchange interaction. Finally, the physics of the relevant relaxation and dephasing mechanisms is reviewed and experimental results are compared with theories for spin-orbit and hyperfine interactions. All these subjects are directly relevant for the fields of quantum information processing and spintronics with single spins (i.e. single-spintronics).

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