Superconducting quantum detectors: publications

A single-chip dual-band switched SIS mixer

Proceedings of SPIE--the International Society for Optical Engineering SPIE, the international society for optics and photonics 9153 (2014) 91532o-91532o-10

Authors:

Boon Kok Tan, Ghassan Yassin, Stafford Withington

Instrumentation for single-dish observations with The Greenland Telescope

Proceedings of SPIE--the International Society for Optical Engineering SPIE, the international society for optics and photonics 9153 (2014) 91531v-91531v-11

Authors:

Paul K Grimes, K Asada, R Blundell, R Burgos, H-H Chang, MT Chen, D Goldie, C Groppi, CC Han, PTP Ho, YD Huang, M Inoue, D Kubo, P Koch, J Leech, E de Lera Acedo, P Martin-Cocher, H Nishioka, M Nakamura, S Matsushita, SN Paine, N Patel, P Raffin, W Snow, TK Sridharan, R Srinivasan, CN Thomas, E Tong, M-J Wang, C Wheeler, S Withington, G Yassin, L-Z Zeng

Ultra-Wide Intermediate Bandwidth for High-Frequency SIS Mixers

IEEE Transactions on Terahertz Science and Technology Institute of Electrical and Electronics Engineers (IEEE) 4:2 (2014) 165-170

Authors:

Boon-Kok Tan, Ghassan Yassin, Paul Grimes

Development of a NbN Deposition Process for Superconducting Quantum Sensors

(2014)

Authors:

DM Glowacka, DJ Goldie, S Withington, H Muhammad, G Yassin, BK Tan

A superconducting millimetre switch with multiple nano-bridges

ISSTT 2014 - 25th International Sympsoium on Space Terahertz Technology, Proceedings (2014) 164-169

Authors:

BK Tan, G Yassin, L Kuzmin, E Otto, H Merabet, C North

Abstract:

In this paper, we describe the design of a planar superconducting on/off switch comprising a high normal resistance nano-bridge deposited across a slotline transmission line. We present preliminary experimental results measured at 220 GHz range, and we discuss in detail the various parameters that affect the performance of the planar on/off switch, including the optimum thickness required for the nano-bridge to achieve high dynamic range and low transmission loss. The analysis is done by combining the accurate superconducting surface impedance description with rigorous electromagnetic simulations, and comparing the simulated results with the measured performance of a previously fabricated on/off switch fed by a backto- back unilateral finline taper. Finally, we propose an improved method to further increase the dynamic range of the switch, by introducing a multi-bridge design to tune out the residual inductance of the nano-bridges.

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