Ultra High Q-Factor Superconducting Microresonator to Use in Microwave Kinetic Inductance Detectors

This article is focused on the design and development of superconducting Microwave Kinetic Inductance Detector (MKID) which is used at near, mid and far-infrared, optical and ultraviolet wavelengths for astronomical applications. MKIDs are superconducting micro-resonators which are very much considered, due to high sensitivity, simplicity in fabrication and ease of read out by a coplanar waveguide or microstrip transmission line. Here a new structure for inductor of lumped element microwave resonator is proposed that causes a very high Quality factor in smaller dimensions. Our resonator's intrinsic Q factor is above 8×10
⁶
in dimensions of 441×487 μm
²
which is the highest value in such dimensions. due to the small dimensions of this resonator, makes it desirable to use in large arrays spectrometers.