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Improving the purity of one‐ and two‐qubit gates
Author(s) -
Kohler S.,
Hänggi P.
Publication year - 2006
Publication title -
fortschritte der physik
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.469
H-Index - 71
eISSN - 1521-3978
pISSN - 0015-8208
DOI - 10.1002/prop.200610314
Subject(s) - qubit , coherence (philosophical gambling strategy) , computer science , physics , electronic engineering , topology (electrical circuits) , algorithm , optoelectronics , quantum mechanics , electrical engineering , engineering , quantum
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.