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arXiv · 1310.1504

Photon-induced thermal effects in superconducting coplanar waveguide resonators

Yiwen Wang·Pinjia Zhou·Lianfu Wei·Haijie Li·Beihong Zhang·Miao Zhang·Qiang Wei·Yurong Fang·Chunhai Cao
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Abstract

We experimentally investigated the optical responses of a superconducting niobium resonator. It was found that, with increasing radiation power, the resonance frequency increases monotonically below around 500 mK, decreases monotonically above around 1 K and exhibits a nonmonotonic behavior at around 700 mK. These observations show that one can operate the irradiated resonator in three temperature regimes, depending on whether two-level system (TLS) effects or kinetic inductance effects dominate. Furthermore, we found that the optical responses at ultra-low temperatures can be qualitatively regarded as a photon-induced thermalization effect of TLSs, which could be utilized to achieve thermal sensitive photon detections.

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Yiwen Wang, Pinjia Zhou, Lianfu Wei, Haijie Li, Beihong Zhang, Miao Zhang, Qiang Wei, Yurong Fang, Chunhai Cao. 2013-10-05. Photon-induced thermal effects in superconducting coplanar waveguide resonators. https://doi.org/10.1063/1.4826271

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