6533b822fe1ef96bd127d6c1

RESEARCH PRODUCT

Dissipation and entanglement dynamics for two interacting qubits coupled to independent reservoirs

Rosanna MiglioreM. ScalaM. ScalaAntonino Messina

subject

Statistics and ProbabilityJosephson effectPhysicsQuantum PhysicsStructure (category theory)FOS: Physical sciencesGeneral Physics and AstronomyStatistical and Nonlinear PhysicsQuantum entanglementDissipationSudden deathdissipazioneteoria dei sistemi quantistici apertiModeling and SimulationQuantum mechanicsQubitMaster equationQuantum Physics (quant-ph)entanglementMathematical PhysicsStationary state

description

We derive the master equation of a system of two coupled qubits by taking into account their interaction with two independent bosonic baths. Important features of the dynamics are brought to light, such as the structure of the stationary state at general temperatures and the behaviour of the entanglement at zero temperature, showing the phenomena of sudden death and sudden birth as well as the presence of stationary entanglement for long times. The model here presented is quite versatile and can be of interest in the study of both Josephson junction architectures and cavity-QED.

yearjournalcountryeditionlanguage
2008-01-01
10.1088/1751-8113/41/43/435304http://arxiv.org/abs/0806.4852