Singlet-Triplet Dephasing in Asymmetric Quantum Dot Molecules

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

Abstracts

EN

We discuss pure dephasing of singlet-triplet superpositions in two-electron double quantum dots due to elastic phonon scattering. We generalize our previous results to a system built of two non-identical dots. We show that the asymmetry must be very strong in order to considerably affect the dephasing rate.

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: 874-876

Dates

published

2009-11

References

• 1. D. Loss, D.P. DiVincenzo, Phys. Rev. A 57, 120 (1998)
• 2. K. Roszak, P. Machnikowski, Phys. Rev. B 80, 195315 (2009)
• 3. J.R. Petta, A.C. Johnson, J.M. Taylor, E.A. Laird, A. Yacoby, M.D. Lukin, C.M. Marcus, M.P. Hanson, A.C. Gossard, Science 309, 2180 (2005)
• 4. F.H.L. Koppens, J.A. Folk, J.M. Elzerman, R. Hanson, L.H. Willems van Beveren, I.T. Vink, H.P. Tranitz, W. Wegscheider, L.P. Kouwenhoven, L.M.K. Vandersypen, Science 309, 1346 (2005)
• 5. A. Grodecka, P. Machnikowski, J. Förstner, Phys. Rev. B 78, 085302 (2008)

Identifiers

DOI

10.12693/APhysPolA.116.874