6533b82dfe1ef96bd129200f
RESEARCH PRODUCT
Interaction free and decoherence free states
Anna NapoliPaweł NależytyAntonino MessinaDariusz ChruścińskiM. Guccionesubject
PhysicsQuantum Physicsopen quantum systemQuantum decoherenceAtomic and Molecular Physics and OpticMixed statesBipartite systemCharacteristic equationFOS: Physical sciencesState (functional analysis)Condensed Matter PhysicCondensed Matter PhysicsAtomic and Molecular Physics and OpticsSettore FIS/03 - Fisica Della MateriaTerm (time)quantum dynamicgeneralized subradiant stateQuantum mechanicsBipartite graphStatistical physicsQuantum Physics (quant-ph)Mathematical PhysicsGenerator (mathematics)description
An interaction free evolving state of a closed bipartite system composed of two interacting subsystems is a generally mixed state evolving as if the interaction were a c-number. In this paper we find the characteristic equation of states possessing similar properties for a bipartite systems governed by a linear dynamical equation whose generator is sum of a free term and an interaction term. In particular in the case of a small system coupled to its environment, we deduce the characteristic equation of decoherence free states namely mixed states evolving as if the interaction term were effectively inactive. Several examples illustrate the applicability of our theory in different physical contexts.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2015-01-01 |