Wednesday, April 17, 2013

1304.4382 (X. Shi et al.)

Stark-chirped rapid adiabatic passage in the presence of dissipation for
quantum computation
   [PDF]

X. Shi, C. H. Oh, L. F. Wei
Stark-chirped rapid adiabatic passage (SCRAP) is an important technique used for coherent quantum controls. In this paper we investigate how the practically-existing dissipation of the system influences on the efficiency of the passage, and thus the fidelities of the SCRAP-based quantum gates. With flux-biased Josephson qubits as a specifical example, our results show clearly that the efficiency of the logic gates implemented by SCRAP are robust against the weak dissipation. The influence due to the non-adiabtic transitions between the adiabatic passages is comparatively significantly small. Therefore, the SCRAP-based logic gates should be feasible for the realistic physical systems with noises.
View original: http://arxiv.org/abs/1304.4382

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