6533b836fe1ef96bd12a15d6

RESEARCH PRODUCT

Detuning-induced robustness of a three-state Landau-Zener model against dissipation

Benedetto Militello

subject

Physicstime-dependent hamiltonianQuantum Physicsquantum noiseFOS: Physical sciencesDissipation01 natural sciencesSettore FIS/03 - Fisica Della Materia010305 fluids & plasmasLandau-Zenersymbols.namesakeQuantum electrodynamics0103 physical sciencessymbolsEquidistantStandard linear solid modelQuantum Physics (quant-ph)010306 general physicsAdiabatic processHamiltonian (quantum mechanics)Eigenvalues and eigenvectors

description

A three-state system subjected to a time-dependent Hamiltonian whose bare energies undergo one or more crossings, depending on the relevant parameters, is considered, also taking into account the role of dissipation in the adiabatic following of the Hamiltonian eigenstates. Depending on the fact that the bare energies are equidistant or not, the relevant population transfer turns out to be very sensitive to the environmental interaction or relatively robust. The physical mechanisms on the basis of this behavior are discussed in detail.

https://doi.org/10.1103/physreva.99.063412