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RESEARCH PRODUCT
Entanglement control via reservoir engineering in ultracold atomic gases
Massimo PalmaPinja HaikkaSabrina ManiscalcoSuzanne McendooGabriele De Chiarasubject
OPEN QUANTUM-SYSTEMSDYNAMICSSuperlatticeDephasingGeneral Physics and AstronomyFOS: Physical sciencesSIMULATORTrappingQuantum entanglementPhysics and Astronomy(all)Sudden deathSettore FIS/03 - Fisica Della MateriaOpen quantum system/dk/atira/pure/subjectarea/asjc/3100Quantum mechanicsMOTT INSULATORTELEPORTATIONPhysicsCondensed Matter::Quantum GasesQuantum PhysicsCondensed Matter::OtherQuantum PhysicsCondensed Matter::Mesoscopic Systems and Quantum Hall Effectcold atoms open quantum systems on markovian dynamicsSTATESQuantum Gases (cond-mat.quant-gas)QubitReservoir engineeringQuantum Physics (quant-ph)Condensed Matter - Quantum GasesTRANSITIONdescription
We study the entanglement of two impurity qubits immersed in a Bose-Einstein condensate (BEC) reservoir. This open quantum system is particularly interesting because the reservoir and system parameters are easily controllable and the reduced dynamics is highly non-Markovian. We show how the model allows for interpolation between a common dephasing scenario and an independent dephasing scenario by simply modifying the wavelength of the superlattice superposed to the BEC, and how this influences the dynamical properties of the impurities. We demonstrate the existence of very rich entanglement dynamics correspondent to different values of reservoir parameters, including phenomena such as entanglement trapping, entanglement sudden death, revivals of entanglement, and BEC-mediated entanglement generation. In the spirit of reservoir engineering, we present the optimal BEC parameters for entanglement generation and trapping, showing the key role of the ultracold gas interactions.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2013-03-01 |