Use of quantum-point-contact high-electron-mobility-transistors for time domain multiplexing of large arrays of high impedance low temperature bolometers

• DOI: 10.1063/1.2712912
• Publication Date: 2007-03-10T22:52:41Z
• Authors: S. J. C. Yates; A. Benoit; E. Grémion; Ch. Ulysse; Ph. Camus; A. Cavanna; T. Durand; B. Etienne; U. Gennser; C. Hoffmann; S. Leclercq; Y. Jin
• Keywords: High impedance

The use of a multiplexing readout for an array bolometers simplifies the electronics and wiring, so making large arrays (>100) feasible. Here we describe time domain technique its performance based on quantum-point-contact high-electron-mobility-transistors as low temperature (to ∼100 mK) switches measuring high impedance (5…70 MΩ) resistances sensors. presented system is well matched to ground millimetric astronomy demands.