Dephasing of Electron Spin Qubits due to their Interaction with Nuclei in Quantum Dots

• Authors: Ł. Cywiński
• Languages of publication: EN

Abstracts

EN

Coherence of spins of electrons confined in III-V quantum dots is strongly affected by their hyperfine interaction with the nuclei. In this paper an introduction to this subject is presented. Some theoretical approaches to the problem will be outlined. Most attention will be given to the quasi-static bath approximation, to the cluster expansion theories of dephasing due to the nuclear dynamics induced by the dipolar interactions (spectral diffusion), and to the effective Hamiltonian based theory of dephasing due to hyperfine-mediated interactions. The connections between the theoretical results and various experiments will be emphasized.

Keywords

EN

03.65.Yz; 76.30.-v; 76.60.Lz; 02.60.Cb

Discipline

• 03.65.Yz: Decoherence; open systems; quantum statistical methods(see also 03.67.Pp in quantum information; for decoherence in Bose-Einstein condensates, see 03.75.Gg)
• 02.60.Cb: Numerical simulation; solution of equations
• 76.60.Lz: Spin echoes
• 76.30.-v: Electron paramagnetic resonance and relaxation(see also 33.35.+r Electron resonance and relaxation in atomic and molecular physics; 87.80.Lg Magnetic and paramagnetic resonance in biological physics)

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2011
• Volume: 119
• Issue: 5
• Pages: 576-587

Dates

published

2011-05

Contributors

author

Ł. Cywiński

• Institute of Physics, Polish Academy of Sciences, al. Lotników 32/46, PL 02-668 Warszawa, Poland

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Identifiers

DOI

10.12693/APhysPolA.119.576