Abstract
We have studied the dissipative dynamics of a solid-state qubit with an extra electron confined to either one of two coupled quantum dots. Previous theoretical work based on Bloch-type rate equations gave an unphysical uniform occupation probability of the electron in the quantum dots even for non-identical dots. We show that this is due to neglecting higher-order interactions in the analysis. By including higher-order terms, we obtain expected asymmetric occupation probabilities for non-identical dots. Our work demonstrates that the high-order interaction terms can lead to important qualitative impacts on the operation of the qubit.
Original language | English |
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Article number | 010 |
Pages (from-to) | 11551-11559 |
Number of pages | 9 |
Journal | Journal of Physics Condensed Matter |
Volume | 18 |
Issue number | 50 |
DOIs | |
Publication status | Published - 20 Dec 2006 |
ASJC Scopus subject areas
- Condensed Matter Physics
- Electronic, Optical and Magnetic Materials