Improving the purity of one- and two-qubit gates by AC fields

Details Improving the purity of one- and two-qubit gates by AC fields Improving the purity of one- and two-qubit gates by AC fields

2005-09-13

arxiv.org/abs/quant-ph/0509085v1

Fortschr. Phys. 54, 804 (2006)

Physics

Quantum Physics

16 pages, 7 figures, style file included

Scientific paper

10.1002/prop.200610314

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.

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