6533b85cfe1ef96bd12bd376

RESEARCH PRODUCT

Interaction-free evolving states of a bipartite system

Anna NapoliDariusz ChruścińskiM. GuccioneAntonino Messina

subject

PhysicsQuantum PhysicsQuantum decoherenceBipartite systemPhysical systemFOS: Physical sciencesAtomic and Molecular Physics and OpticsStar systemSeparable spacesymbols.namesakeTheoretical physicsNon homogeneoussymbolsQuantum Physics (quant-ph)Hamiltonian (quantum mechanics)DECOHERENCE FREE SUBSPACESubspace topologySUBRADIANCE

description

We show that two interacting physical systems may admit entangled pure or non separable mixed states evolving in time as if the mutual interaction hamiltonian were absent. In this paper we define these states Interaction Free Evolving (IFE) states and characterize their existence for a generic binary system described by a time independent Hamiltonian. A comparison between IFE subspace and the decoherence free subspace is reported. The set of all pure IFE states is explicitly constructed for a non homogeneous spin star system model.

yearjournalcountryeditionlanguage
2014-01-01
10.1103/physreva.89.062104http://hdl.handle.net/10447/95600