Superconducting On-chip Fourier Transform Spectrometer
arXiv:1909.02100 · doi:10.1007/s10909-020-02490-7
Abstract
Kinetic inductance in thin film superconductors has been used as the basis for low-temperature, low-noise photon detectors. In particular thin films such as NbTiN, TiN, NbN, the kinetic inductance effect is strongly non-linear in the applied current, which can be utilized to realize novel devices. We present results from transmission lines made with these materials, where DC (current) control is used to modulate the phase velocity thereby enabling an on-chip spectrometer. The utility of such compact spectrometers are discussed, along with their natural connection with parametric amplifiers.
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- Development of Superconducting On-chip Fourier Transform Spectrometers