Investigation of nonlinear effects in Josephson parametric oscillators used in circuit quantum electrodynamics
Journal article, 2013
We experimentally study the behavior of a parametrically pumped nonlinear oscillator, which is based on a superconducting quarter wavelength 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 is determined from the probe-power dependent frequency shift of the oscillator, and the nonlinearity 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 by adding a small dc flux and a pump tone at twice the pump frequency.
SQUID
circuit QED
parametric amplifiers
parametric oscillator
Author
Philip Krantz
Chalmers, Microtechnology and Nanoscience (MC2), Quantum Device Physics
Yarema Reshitnyk
University of Queensland
Waltraut Wustmann
Chalmers, Microtechnology and Nanoscience (MC2), Applied Quantum Physics
Jonas Bylander
Chalmers, Microtechnology and Nanoscience (MC2), Quantum Device Physics
Simon Gustavsson
Massachusetts Institute of Technology (MIT)
William Oliver
Massachusetts Institute of Technology (MIT)
MIT Lincoln Laboratory
Tim Duty
University of New South Wales (UNSW)
Vitaly Shumeiko
Chalmers, Microtechnology and Nanoscience (MC2), Applied Quantum Physics
Per Delsing
Chalmers, Microtechnology and Nanoscience (MC2), Quantum Device Physics
New Journal of Physics
1367-2630 (ISSN)
Vol. 15 (article nr) 105002- 105002Quantum optics with microwave photons building a tool-box based on superconducting technology (QUOMP)
European Commission (EC) (EC/FP7/247208), 2010-03-01 -- 2015-02-28.
Areas of Advance
Nanoscience and Nanotechnology
Subject Categories
Condensed Matter Physics
DOI
10.1088/1367-2630/15/10/105002