Volume 85, Number 6, March 2009
Article Number 68001
Number of page(s) 6
Section Interdisciplinary Physics and Related Areas of Science and Technology
Published online 31 March 2009
EPL, 85 (2009) 68001
DOI: 10.1209/0295-5075/85/68001

Intermodulation and parametric amplification in a superconducting stripline resonator integrated with a dc-SQUID

B. Abdo1, O. Suchoi1, E. Segev1, O. Shtempluck1, M. Blencowe2 and E. Buks1

1   Department of Electrical Engineering, Technion - Haifa 32000, Israel
2   Department of Physics and Astronomy, Dartmouth College - Hanover, NH 03755, USA

received 17 November 2008; accepted in final form 23 February 2009; published March 2009
published online 31 March 2009

We utilize a superconducting stripline resonator containing a dc-SQUID as a strong intermodulation amplifier exhibiting a signal gain of 24 dB and a phase modulation of 30 dB. Studying the system response in the time domain near the intermodulation amplification threshold reveals a unique noise-induced spikes behavior. We account for this response qualitatively via solving numerically the equations of motion for the integrated system. Furthermore, employing this device as a parametric amplifier yields an abrupt rise of 38 dB in the generated side-band signal.

85.25.Dq - Superconducting quantum interference devices (SQUIDs).
84.40.Dc - Microwave circuits.
05.45.-a - Nonlinear dynamics and chaos.

© EPLA 2009