Geometric phase for an adiabatically evolving open quantum system
arXiv:quant-ph/0406018 · doi:10.1103/PhysRevA.70.044103
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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