✦ LIBER ✦
Study of the decoherence of a double quantum dot charge qubit via the Redfield equation
✍ Scribed by Zeng-Zhao Li; Xiao-Yin Pan; Xian-Ting Liang
- Publisher
- Elsevier Science
- Year
- 2008
- Tongue
- English
- Weight
- 367 KB
- Volume
- 41
- Category
- Article
- ISSN
- 1386-9477
No coin nor oath required. For personal study only.
✦ Synopsis
By using the Redfield form of the master equation, we investigate the decoherence times of a double quantum dot charge qubit (DQDCQ) in three different cases, namely when it is coupled to (I) the piezoelectric coupling phonon bath (PCPB), (II) the deformation coupling phonon bath (DCPB), and (III) the Ohmic bath. It is found that our results for cases (I) and (II) are in the same magnitude with those obtained via the exact path integral methods, while for case (III), the decoherence time is in well agreement with the experimental value.