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Period-tripling subharmonic oscillations in a driven superconducting resonator
- Source :
- Physical Review B (2469-9950) vol.96(2017)
- Publication Year :
- 2017
-
Abstract
- We have observed period-tripling subharmonic oscillations, in a superconducting coplanar waveguide resonator operated in the quantum regime, $k_B T \ll \hbar\omega$. 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, $\omega/2\pi \sim 5\,$GHz, when the resonator was driven by a current at $3\omega$ with an amplitude exceeding an instability threshold. The output radiation was red-detuned from the fundamental mode. We observed three stable radiative states with equal amplitudes and phase-shifted by $120^\circ$. The downconversion from $3\omega$ to $\omega$ is strongly enhanced by 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.
- Subjects :
- Kerr effect
superconducting devices
FOS: Physical sciences
02 engineering and technology
SQUID
01 natural sciences
Omega
Instability
Resonator
Condensed Matter::Superconductivity
nonlinear superconducting resonators
Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
0103 physical sciences
010306 general physics
Nonlinear Sciences::Pattern Formation and Solitons
Superconductivity
Physics
Quantum Physics
Condensed Matter - Mesoscale and Nanoscale Physics
Coplanar waveguide
Condensed Matter Physics
021001 nanoscience & nanotechnology
subharmonic oscillations
Amplitude
tunable resonators
Nano Technology
Atomic physics
Quantum Physics (quant-ph)
0210 nano-technology
Excitation
Subjects
Details
- Language :
- English
- Database :
- OpenAIRE
- Journal :
- Physical Review B (2469-9950) vol.96(2017)
- Accession number :
- edsair.doi.dedup.....24eb6a1130b35b0adf805f75e12a1333