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arXiv:cond-mat/0601190

Fast Resonance Frequency Modulation in Superconducting Stripline Resonator

Eran Segev, Baleegh Abdo, Oleg Shtempluck, Eyal Buks

Published Jan 10, 2006• 0 citations
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Abstract

Fast resonance frequency modulation of a superconducting stripline resonator is investigated. The experiments are performed using a novel device which integrates a hot electron detector (HED) into a superconducting stripline ring resonator. Frequency modulation is demonstrated by both applying dc current or voltage to the HED, and by applying optical illumination, with modulation frequencies of up to 4.2GHz. Potential applications for such a device are in telecommunication, quantum cryptography and biofluorescence.

DOI
10.48550/arxiv.cond-mat/0601190

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We study a microwave superconducting stripline resonator made of NbN on a sapphire substrate. A radiation detector (RD) having a thin meander shape is integrated into the resonator. We harness an extremely strong nonlinear instability occurring in the device in order to enhance its sensitivity to infrared radiation impinging on the RD. Characterization measurements yield a noise equivalent power of 34 fW/radicHz at a modulation frequency of 7.74 GHz. Such a device may be exploited for fast and sensitive radiation detection.
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