Journal
PHYSICA SCRIPTA
Volume T137, Issue -, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/0031-8949/2009/T137/014019
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Nonlinear kinetic inductance in a high Q superconducting coplanar waveguide microresonator can cause a bifurcation of the resonance curve. Near the critical pumping power and frequency for bifurcation, large parametric gain is observed for signals in the frequency band near resonance. We show experimental results on signal and intermodulation gain which are well described by a theory of parametric amplification based on a Kerr nonlinearity. Phase-dependent gain or signal squeezing is verified with a homodyne detection scheme.
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