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EnglishA 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.
Militello, B. (2019). Three-state Landau-Zener model in the presence of dissipation. PHYSICAL REVIEW A, 99(3), 033415-1-033415-7.
| Data di pubblicazione: | 2019 |
| Titolo: | Three-state Landau-Zener model in the presence of dissipation |
| Autori: | MILITELLO, Benedetto (Corresponding) |
| Citazione: | Militello, B. (2019). Three-state Landau-Zener model in the presence of dissipation. PHYSICAL REVIEW A, 99(3), 033415-1-033415-7. |
| Rivista: | |
| Digital Object Identifier (DOI): | http://dx.doi.org/10.1103/PhysRevA.99.033415 |
| Abstract: | 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. |
| URL: | https://arxiv.org/abs/1901.06911 |
| Settore Scientifico Disciplinare: | Settore FIS/03 - Fisica Della Materia |
| Appare nelle tipologie: | 1.01 Articolo in rivista |
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http://hdl.handle.net/10447/358955
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