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Invariant dynamicsofasuperconductingqubitstronglycoupledtoacavity
field withoutenergyrelaxation

Research Abstract
MotivatedbyrecentexperimentswhereintheCooperboxcanbeusedtoprobethedecayofthe resonatorsuperpositionstateduetoenvironmentaldecoherence.Wetheoreticallyinvestigatethe dynamicsofentanglementandmixednessofasuperconductingqubitstronglycoupledtoacavityfield inducedbyaphase-dampingreservoirgovernedbyamasterequation.Withaphase-damping,the amountoftheentanglementandthemixednessoftheglobalsystemandoftheresonatorstateshave invariantdynamicswhilephasedampinghasnoeffectonthedynamicofthedegreeofthemixedness of theCooper-pairstate.
Research Authors
A.-S.F. Obada , H.A.Hessian , A.-B.A.Mohamed
Research Department
Research Journal
Physica E
Research Pages
PP. 1262–1266
Research Rank
1
Research Vol
Vol. 42
Research Year
2010