Superconducting On-Chip Spectrometery for Millimeter-submillimeter Wave Astronomy

Akira ENDO  

IEICE TRANSACTIONS on Electronics   Vol.E98-C    No.3    pp.219-226
Publication Date: 2015/03/01
Online ISSN: 1745-1353
DOI: 10.1587/transele.E98.C.219
Type of Manuscript: Special Section INVITED PAPER (Special Section on Leading-Edge Applications and Fundamentals of Superconducting Sensors and Detectors)
Spectroscopy,  millimeter wave,  submillimeter wave,  superconducting electronics,  astronomical instrumentation,  

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Since the birth of astrophysics, astronomers have been using free-space optics to analyze light falling on Earth. In the future however, thanks to the advances in photonics and nanoscience/nanotechnology, much of the manipulation of light might be carried out using not optics but confined waveguides, or circuits, on a chip. This new generation of instruments will be not only extremely compact, but also powerful in performance because the integration enables a greater degree of multiplexing. The benefit is especially profound for space- or air-borne observatories, where size, weight, and mechanical reliability are of top priority. Recently, several groups around the world are trying to integrate ultra-wideband (UWB), low-resolution spectrometers for millimeter-submillimeter waves onto microchips, using superconducting microelectronics. The scope of this Paper is to provide a general introduction and a review of the state-of-the-art of this rapidly advancing field.