Geometric phase for an adiabatically evolving open quantum system

Physical Review A (Impact Factor: 3.04). 07/2004; DOI: 10.1103/PhysRevA.70.044103
Source: arXiv

ABSTRACT We derive an elegant solution for a two-level system evolving adiabatically under the influence of a driving field with a time-dependent phase, which includes open system effects such as dephasing and spontaneous emission. This solution, which is obtained by working in the representation corresponding to the eigenstates of the time-dependent Hermitian Hamiltonian, enables the dynamic and geometric phases of the evolving density matrix to be separated and relatively easily calculated.

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