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FFTS readout for large arrays of Microwave Kinetic Inductance Detectors

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arxiv 0903.2431 v1 pith:2MTEGA3E submitted 2009-03-13 astro-ph.IM cond-mat.supr-con

FFTS readout for large arrays of Microwave Kinetic Inductance Detectors

S. J. C. Yates , A. M. Baryshev , J. J. A. Baselmans , B. Klein , R. G\"usten This is my paper
classification astro-ph.IM cond-mat.supr-con
keywords readoutallowingarraysdetectordetectorsdomainfftsfrequency
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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Microwave Kinetic Inductance Detectors (MKIDs) have great potential for large very sensitive detector arrays for use in, for example, sub-mm imaging. Being intrinsically readout in the frequency domain, they are particularly suited for frequency domain multiplexing allowing $\sim$1000s of devices to be readout with one pair of coaxial cables. However, this moves the complexity of the detector from the cryogenics to the warm electronics. We present here the concept and experimental demonstration of the use of Fast Fourier Transform Spectrometer (FFTS) readout, showing no deterioration of the noise performance compared to low noise analog mixing while allowing high multiplexing ratios.

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