Phonon-Induced Pure Dephasing of Two-Electron Spin States in Vertical Quantum Dot Molecules

• Authors: K. Roszak , P. Machnikowski
• Languages of publication: EN

Abstracts

EN

Phonon-induced dephasing of two-electron spin states in two vertically stacked self-assembled GaAs/InGaAs quantum dots is studied. A pure dephasing process due to elastic phonon scattering is found to dominate at low temperatures. This process is independent of the spin-orbit coupling and does not require the presence of a magnetic field. It relies on interdot tunneling and the Pauli principle, which make the double quantum dot gate for spin based quantum computing possible, and therefore cannot be avoided.

Keywords

EN

73.21.La   03.65.Yz   72.10.Di   03.67.Lx  

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2009
• Volume: 116
• Issue: 5
• Pages: 877-878

Dates

published

2009-11

References

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Identifiers

DOI

10.12693/APhysPolA.116.877