Initial decoherence in solid state qubits

Details Initial decoherence in solid state qubits Initial decoherence in solid state qubits

2004-09-20

arxiv.org/abs/cond-mat/0409522v2

Phys. Rev. Lett. 94, 167002 (2005)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 4 figures. Replaced with published version

Scientific paper

10.1103/PhysRevLett.94.167002

We study decoherence due to low frequency noise in Josephson qubits. Non-Markovian classical noise due to switching impurities determines inhomogeneous broadening of the signal. The theory is extended to include effects of high-frequency quantum noise, due to impurities or to the electromagnetic environment. The interplay of slow noise with intrinsically non-gaussian noise sources may explain the rich physics observed in the spectroscopy and in the dynamics of charge based devices.

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