Non-Adiabatic Fluctuation in Measured Geometric Phase

Details Non-Adiabatic Fluctuation in Measured Geometric Phase Non-Adiabatic Fluctuation in Measured Geometric Phase

2009-03-31

arxiv.org/abs/0903.5381v2

Phys. Rev. A 80, 024101 (2009)

Physics

Quantum Physics

4 pages, 3 figures

Scientific paper

10.1103/PhysRevA.80.024101

We study how the non-adiabatic effect causes the observable fluctuation in the "geometric phase" for a two-level system, which is defined as the experimentally measurable quantity in the adiabatic limit. From the Rabi's exact solution to this model, we give a reasonable explanation to the experimental discovery of phase fluctuation in the superconducting circuit system [P. J. Leek, \textit{et al}., Science \textbf{318}, 1889 (2007)], which seemed to be regarded as the conventional experimental error.

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