Physics – Condensed Matter – Mesoscale and Nanoscale Physics
Scientific paper
2009-03-05
Physics
Condensed Matter
Mesoscale and Nanoscale Physics
5 pages, 4 figures. Comments welcome
Scientific paper
We study electron-phonon interaction induced decoherence between two-electron singlet and triplet states in a semiconductor double quantum dot using a spin-boson model. We investigate the onset and time evolution of this dephasing, and study its dependence on quantum dot parameters such as dot size and double dot separations, as well as the host materials (GaAs and Si). We find that electron-phonon interaction causes an initial Gaussian decay of the off-diagonal density matrix element in the singlet-triplet Hilbert space, and a long-time exponential decay originating from phonon relaxation.
No associations
LandOfFree
Dephasing of two-spin states by electron-phonon interaction in semiconductor nanostructures: Spin-boson model with a dissipative reservoir does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Dephasing of two-spin states by electron-phonon interaction in semiconductor nanostructures: Spin-boson model with a dissipative reservoir, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Dephasing of two-spin states by electron-phonon interaction in semiconductor nanostructures: Spin-boson model with a dissipative reservoir will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-134388