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