The Long-wavelength Project develops state-of-the-art sensor arrays and multiplexed readout technology for the detection of millimeter and sub-millimeter wavelength light. We design and fabricate superconducting integrated circuits in the Boulder Microfabrication Facility for this purpose. Applications range from fundamental physics and astrophysics to the remote detection of concealed weapons.
In recent work, we developed polarization sensitive detector arrays for a variety of applications, a main one being precision measurements of the Cosmic Microwave Background. We have focused on two sensor technologies: voltage biased transition edge sensor (TES) bolometers and Microwave Kinetic Inductance Detectors (MKIDs). A second focus area is the development of a new type of multiplexed readout, called the microwave SQUID multiplexer, which will greatly expand the sensor count of low temperature detector arrays. A third focus area is the development of a stand-off, passive THz imager for security applications. A demonstration of real-time imaging can be found in this news article.
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