Improving the purity of one- and two-qubit gates by AC fields
- We investigate the influence of AC driving fields on the coherence properties of one- and two-qubit gate operations. In both cases, we find that for suitable driving parameters, the gate purity improves significantly. A mapping of the time-dependent system-bath model to an effective static model provides analytical results. The resulting purity loss compares favorably with numerical results.
Author: | Sigmund KohlerORCiDGND, Peter HänggiORCiDGND |
---|---|
URN: | urn:nbn:de:bvb:384-opus4-2665 |
Frontdoor URL | https://opus.bibliothek.uni-augsburg.de/opus4/332 |
Type: | Preprint |
Language: | English |
Publishing Institution: | Universität Augsburg |
Release Date: | 2006/08/31 |
Tag: | Quantum computation; decoherence; driven systems |
GND-Keyword: | Quantencomputer; Kohärenz |
Source: | erschienen in: Fortschritte der Physik 54, 804–819 (2006); DOI 10.1002/prop.200610314; URL: http://www3.interscience.wiley.com/cgi-bin/abstract/112736862/ABSTRACT |
Institutes: | Mathematisch-Naturwissenschaftlich-Technische Fakultät |
Mathematisch-Naturwissenschaftlich-Technische Fakultät / Institut für Physik | |
Mathematisch-Naturwissenschaftlich-Technische Fakultät / Institut für Physik / Lehrstuhl für Theoretische Physik I | |
Dewey Decimal Classification: | 5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik |