Investigation of nonlinear effects in Josephson parametric oscillators used in circuit quantum electrodynamics

Krantz, Philip, Reshitnyk, Yarema, Wustmann, Waltraut, Bylander, Jonas, Gustavsson, Simon, Oliver, William D., Duty, Timothy, Shumeiko, Vitaly and Delsing, Per (2013) Investigation of nonlinear effects in Josephson parametric oscillators used in circuit quantum electrodynamics. New Journal of Physics, 15 . doi:10.1088/1367-2630/15/10/105002


Author Krantz, Philip
Reshitnyk, Yarema
Wustmann, Waltraut
Bylander, Jonas
Gustavsson, Simon
Oliver, William D.
Duty, Timothy
Shumeiko, Vitaly
Delsing, Per
Title Investigation of nonlinear effects in Josephson parametric oscillators used in circuit quantum electrodynamics
Journal name New Journal of Physics   Check publisher's open access policy
ISSN 1367-2630
Publication date 2013-10-01
Year available 2013
Sub-type Article (original research)
DOI 10.1088/1367-2630/15/10/105002
Open Access Status DOI
Volume 15
Total pages 14
Place of publication Bristol, United Kingdom
Publisher Institute of Physics
Language eng
Formatted abstract
We experimentally study the behavior of a parametrically pumped nonlinear oscillator, which is based on a superconducting λ/4 resonator, and is terminated by a flux-tunable superconducting quantum interference device. We extract parameters for two devices. In particular, we study the effect of the nonlinearities in the system and compare to theory. The Duffing nonlinearity, α, is determined from the probe-power dependent frequency shift of the oscillator, and the nonlinearity, β, related to the parametric flux pumping, is determined from the pump amplitude for the onset of parametric oscillations. Both nonlinearities depend on the parameters of the device and can be tuned in situ by the applied dc flux. We also suggest how to cancel the effect of β by adding a small dc flux and a pump tone at twice the pump frequency.
Keyword Amplification
Amplifier
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ
Additional Notes Article number 105002

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Mathematics and Physics
Official 2014 Collection
 
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