Period-tripling subharmonic oscillations in a driven superconducting resonator
Journal article, 2017

We have observed period-tripling subharmonic oscillations in a driven superconducting coplanar waveguide resonator operated in the quantum regime, kappa T-B << hw. The resonator is terminated by a tunable inductance that provides a Kerr-type nonlinearity. We detected the output field quadratures at frequencies near the fundamental mode, omega/2 pi similar to 5 GHz, when driving the resonator with a current at 3 omega, with amplitude exceeding an instability threshold. We observed three stable radiative states with equal amplitudes, phase shifted by 2 pi/3 rad, red detuned from the fundamental mode. The down-conversion from 3 omega to omega is strongly enhanced by near- resonant excitation of the second mode of the resonator and the cross- Kerr effect. Our experimental results are in quantitative agreement with a model for the driven dynamics of two coupled modes.

nonlinear superconducting resonators

subharmonic oscillations

superconducting devices

tunable resonators

SQUID

Author

Ida-Maria Svensson

Chalmers, Microtechnology and Nanoscience (MC2), Quantum Device Physics

Andreas Bengtsson

Chalmers, Microtechnology and Nanoscience (MC2), Quantum Device Physics

Philip Krantz

Chalmers, Microtechnology and Nanoscience (MC2), Quantum Device Physics

Jonas Bylander

Chalmers, Microtechnology and Nanoscience (MC2), Quantum Device Physics

Vitaly Shumeiko

Chalmers, Microtechnology and Nanoscience (MC2), Applied Quantum Physics

Per Delsing

Chalmers, Microtechnology and Nanoscience (MC2), Quantum Device Physics

Physical Review B

2469-9969 (eISSN)

Vol. 96 17 174503-

Quantum Propagating Microwaves in Strongly Coupled Environments (PROMISCE)

European Commission (FP7), 2012-04-01 -- 2015-03-31.

Areas of Advance

Nanoscience and Nanotechnology

Subject Categories

Nano Technology

Condensed Matter Physics

Infrastructure

Nanofabrication Laboratory

DOI

10.1103/PhysRevB.96.174503

More information

Created

11/10/2017