6533b81ffe1ef96bd12785c8
RESEARCH PRODUCT
Three-state Landau-Zener model in the presence of dissipation
Benedetto Militellosubject
Coupling constantPhysicsQuantum PhysicsAvoided crossingFOS: Physical sciencesPopulation transferState (functional analysis)Dissipation01 natural sciencesSettore FIS/03 - Fisica Della Materia010305 fluids & plasmasConnection (mathematics)Landau-ZenerQuantum electrodynamicsadiabatic evolution0103 physical sciencesopen systemStandard linear solid modelQuantum Physics (quant-ph)010306 general physicsAdiabatic processdescription
A population transfer based on adiabatic evolutions in a three-state system undergoing an avoided crossing is considered. The efficiency of the process is analyzed in connection with the relevant parameters, bringing to light an important role of the phases of the coupling constants. The role of dissipation is also taken into account, focusing on external decays that can be described by effective non-Hermitian Hamiltonians. Though the population transfer turns out to be quite sensitive to the decay processes, for very large decay rates the occurrence of a Zeno-phenomenon allows for restoring a very high efficiency.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2019-01-01 | Physical Review A |