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Superconducting qubit in a nonstationary transmission line cavity: parametric excitation, periodic pumping, and energy dissipation
- Publication Year :
- 2016
-
Abstract
- We consider a superconducting qubit coupled to the nonstationary transmission line cavity with modulated frequency taking into account energy dissipation. Previously, it was demonstrated that in the case of a single nonadiabatical modulation of a cavity frequency there are two channels of a two-level system excitation which are due to the absorption of Casimir photons and due to the counterrotating wave processes responsible for the dynamical Lamb effect. We show that the parametric periodical modulation of the resonator frequency can increase dramatically the excitation probability. Remarkably, counterrotating wave processes under such a modulation start to play an important role even in the resonant regime. Our predictions can be used to control qubit-resonator quantum states as well as to study experimentally different channels of a parametric qubit excitation.<br />6 pages, 5 figures; revised version accepted in Physics Letters A
- Subjects :
- Physics
Quantum Physics
Photon
Condensed Matter - Mesoscale and Nanoscale Physics
Condensed Matter - Superconductivity
General Physics and Astronomy
FOS: Physical sciences
Dissipation
01 natural sciences
010305 fluids & plasmas
Casimir effect
Phase qubit
Superconductivity (cond-mat.supr-con)
Resonator
Modulation
Qubit
Quantum electrodynamics
Quantum mechanics
0103 physical sciences
Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
010306 general physics
Quantum Physics (quant-ph)
Excitation
Subjects
Details
- Language :
- English
- Database :
- OpenAIRE
- Accession number :
- edsair.doi.dedup.....be39e82be279d181d57fecb07c827a8e