Stark-Chirped Rapid Adiabatic Passage in Presence of Dissipation for Quantum Computation

(整期优先)网络出版时间:2014-02-12
/ 1
Stark-chirpedrapidadiabaticpassage(SCRAP)isanimportanttechniqueusedforcoherentquantumcontrols.Inthispaperweinvestigatehowthepractically-existingdissipationofthesysteminfluencesontheefficiencyofthepassage,andthusthefidelitiesoftheSCRAP-basedquantumgates.Withflux-biasedJosephsonqubitsasaspecificalexample,ourresultsshowclearlythattheefficiencyofthelogicgatesimplementedbySCRAParerobustagainsttheweakdissipation.Theinfluenceduetothenon-adiabtictransitionsbetweentheadiabaticpassagesiscomparativelysignificantlysmall.Therefore,theSCRAP-basedlogicgatesshouldbefeasiblefortherealisticphysicalsystemswithnoises.