6533b7d6fe1ef96bd1265b94
RESEARCH PRODUCT
Dynamics and extraction of quantum discord in a multipartite open system
Salita SperoneSalvatore SavastaViale A. DoriaGiuseppe CompagnoBruno BellomoAlessandro RidolfoR. Lo FrancoR. Lo Francosubject
dynamics of quantum correlations; extraction of quantum correlations; Multipartite open quantum systems; Physics and Astronomy (miscellaneous)PhysicsQuantum PhysicsQuantum networkQuantum discordPhysics and Astronomy (miscellaneous)dynamics of quantum correlationCluster stateCavity quantum electrodynamicsPhysics::OpticsFOS: Physical sciencesMultipartite open quantum systems; dynamics of quantum correlations; extraction of quantum correlationsQuantum Physicsextraction of quantum correlationsSettore FIS/03 - Fisica Della MateriaMultipartite open quantum systemsQuantum technologyOpen quantum systemdynamics of quantum correlationsMultipartite open quantum systemQuantum mechanicsPhysics::Accelerator PhysicsW stateQuantum Physics (quant-ph)Quantum teleportationdescription
We consider a multipartite system consisting of two noninteracting qubits each embedded in a single-mode leaky cavity, in turn connected to an external bosonic reservoir. Initially, we take the two qubits in an entangled state while the cavities and the reservoirs have zero photons. We investigate, in this six-partite quantum system, the transfer of quantum discord from the qubits to the cavities and reservoirs. We show that this transfer occurs also when the cavities are not entangled. Moreover, we discuss how quantum discord can be extracted from the cavities and transferred to distant systems by traveling leaking photons, using the input-output theory.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2011-06-22 |