TLS Noise Reduction and Sensitivity Improvement of the Microwave Kinetic Inductance Detectors

Document Type : Research Paper


Shahed University


In this paper, we report the sensitivity of superconducting detector resonators and shows which kind of detector is appropriate for detecting cosmic microwave background (CMB). Photons absorbed from galaxies have information about dark matter and dark energy and we need advanced technology to observe cosmic rays. Microwave kinetic inductance detectors (MKIDs) can be used to enjoy an array of thousands of pixels, and a small size design. Sensitive MKIDs with little quantity of noise equivalent power (NEP) could detect photons that have very low energy but intrinsic noise particularly TLS noise. How to design an MKID based on decreasing TLS noise is discussed here. This transmission line resonator was designed with an open circuit lambda second waveguide. This MKID has a reliable quality factor in 6 GHz frequency. An array that includes 8 MKIDs has been designed. The responses which were taken prove that the sensitivity of these MKIDs compare to former MKIDs is slightly more valid.