Quasiparticle Dynamics in NbN Superconducting Microwave Resonators at Single Photon Regime
Paniz Foshat, Shima Poorgholam-khanjari, Valentino Seferai, Hua Feng, Susan Johny, Oleg A. Mukhanov, Matthew Hutchings, Robert H. Hadfield, Martin Weides, and Kaveh Delfanazari
超导间隙以下的能量交换引入了超导量子电路中的准粒子能量分布,这将负责它们的去相干。 本研究考察了准粒子能量对NbN超导微波导波谐振器在硅芯片上性能的影响。 我们测量了响应温度扫描的共振频率和内部质量因子,以评估准粒子动力学的影响。 此外,通过计算NbN薄膜的复杂导电性,我们确定了准粒子密度对实验结果的贡献。
Exchanging energy below the superconducting gap introduces quasiparticle energy distributions in superconducting quantum circuits, which will be responsible for their decoherence. This study examines the impact of quasiparticle energy on the performance of NbN superconducting microwave coplanar waveguide resonators on silicon chips. We measured the resonance frequency and internal quality factor in response to temperature sweeps to evaluate the effect of quasiparticle dynamics. Moreover, by calc...