Period-tripling subharmonic oscillations in a driven superconducting resonator
Artikel i vetenskaplig tidskrift, 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

Författare

Ida-Maria Svensson

Chalmers, Mikroteknologi och nanovetenskap (MC2), Kvantkomponentfysik

Andreas Bengtsson

Chalmers, Mikroteknologi och nanovetenskap (MC2), Kvantkomponentfysik

Philip Krantz

Chalmers, Mikroteknologi och nanovetenskap (MC2), Kvantkomponentfysik

Jonas Bylander

Chalmers, Mikroteknologi och nanovetenskap (MC2), Kvantkomponentfysik

Vitaly Shumeiko

Chalmers, Mikroteknologi och nanovetenskap (MC2), Tillämpad kvantfysik

Per Delsing

Chalmers, Mikroteknologi och nanovetenskap (MC2), Kvantkomponentfysik

Physical Review B

2469-9969 (eISSN)

Vol. 96 174503-

Styrkeområden

Nanovetenskap och nanoteknik

Ämneskategorier

Nanoteknik

Den kondenserade materiens fysik

Infrastruktur

Nanotekniklaboratoriet

DOI

10.1103/PhysRevB.96.174503