Nondegenerate parametric oscillations in a tunable superconducting resonator
Journal article, 2018

We investigate nondegenerate parametric oscillations in a superconducting microwave multimode resonator that is terminated by a superconducting quantum interference device (SQUID). The parametric effect is achieved by modulating magnetic flux through the SQUID at a frequency close to the sum of two resonator-mode frequencies. For modulation amplitudes exceeding an instability threshold, self-sustained oscillations are observed in both modes. The amplitudes of these oscillations s how good quantitative agreement with a theoretical model. The oscillation phases are found to be correlated and exhibit strong fluctuations which broaden the oscillation spectral linewidths. These linewidths are significantly reduced by applying a weak on-resonant tone, which also suppresses the phase fluctuations. When the weak tone is detuned, we observe synchronization of the oscillation frequency with the frequency of the input. For the detuned input, we also observe an emergence of three idlers in the output. This observation is in agreement with theory indicating four-mode amplification and squeezing of a coherent input.

Author

Andreas Bengtsson

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

Philip Krantz

Massachusetts Institute of Technology (MIT)

Michael Roger Andre Simoen

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

Ida-Maria Svensson

Chalmers, Microtechnology and Nanoscience (MC2), Quantum Technology

Ben Schneider

Chalmers, Microtechnology and Nanoscience (MC2), Quantum Technology

Vitaly Shumeiko

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

Per Delsing

Chalmers, Microtechnology and Nanoscience (MC2), Quantum Technology

Jonas Bylander

Chalmers, Microtechnology and Nanoscience (MC2), Quantum Technology

Physical Review B

2469-9950 (ISSN) 2469-9969 (eISSN)

Vol. 97 14 144502

Subject Categories

Other Physics Topics

Fusion, Plasma and Space Physics

Condensed Matter Physics

DOI

10.1103/PhysRevB.97.144502

More information

Latest update

5/2/2018 1