6533b872fe1ef96bd12d42eb
RESEARCH PRODUCT
Berry phase in open quantum systems: a quantum Langevin equation approach
Gabriele De ChiaraG. Massimo PalmaArtur Lozinskisubject
PhysicsQuantum PhysicsCondensed Matter - Mesoscale and Nanoscale PhysicsFOS: Physical sciencesDissipationCOMPUTATIONAtomic and Molecular Physics and OpticsMagnetic fieldLangevin equationsymbols.namesakeGeometric phaseQuantum mechanicsMesoscale and Nanoscale Physics (cond-mat.mes-hall)symbolsAdiabatic processHamiltonian (quantum mechanics)Quantum Physics (quant-ph)QuantumHarmonic oscillatordescription
The evolution of a two level system with a slowly varying Hamiltonian, modeled as s spin 1/2 in a slowly varying magnetic field, and interacting with a quantum environment, modeled as a bath of harmonic oscillators is analyzed using a quantum Langevin approach. This allows to easily obtain the dissipation time and the correction to the Berry phase in the case of an adiabatic cyclic evolution.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2007-01-01 |