Geometric phase via adiabatic manipulations of the environment
It has been shown that geometric phases may be generated in a quantum system subject to noise by adiabatic manipulations of the fluctuating fields, e.g., by variation of the system-environment coupling. For a two-state quantum system, this phase is expressed in terms of the geometry of the path, traversed by the slowly varying direction and amplitude of the fluctuations. The origin of this phase and the possibilities of separating it from the known environment-induced modification of the Berry phase are discussed.
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- 5.M. Möttönen, J. J. Vartiainen, and J. P. Pekola, e-print arXiv:0710.5623 (2007).Google Scholar
- 6.R. S. Whitney, Yu. Makhlin, A. Shnirman, and Y. Gefen, Phys. Rev. Lett. 94, 070407 (2005).Google Scholar
- 7.R. S. Whitney and Y. Gefen, Phys. Rev. Lett. 90, 190402 (2003).Google Scholar
- 9.Yu. Makhlin, G. Schön, and A. Shnirman, in New Directions in Mesoscopic Physics (Towards Nanoscience), Ed. by R. Fazio, V. F. Gantmakher, and Y. Imry (Springer, Berlin, 2003), pp. 197–224.Google Scholar
- 10.Our results, to be presented elsewhere, show that the situation in multilevel systems may be more complicated.Google Scholar