Experimental Investigation of a 220 GHz Planar Multiple Bridges Superconducting Switch
Paper i proceeding, 2015

We present preliminary measured responses of a planar superconducting on/off switch centred at the 220 GHz. The superconducting switch, comprising three niobium nitride (NbN) bridges, deposited across the slotline section of a back-to-back unilateral finline, made of a similar superconducting material. The transmission characteristics of the superconducting switch illuminated by a sub-millimetre source were measured using a superconductor-insulator-superconductor (SIS) chip as direct detector. The NbN bridges were switched from the superconducting state to the normal state by a bias current exceeding the critical current of the bridges. With this arrangement, we have measured a switching dynamic range of similar to 13 dB at 245 GHz, demonstrating the successful operation of the multiple NbN bridges planar superconducting on/off switch.


B. K. Tan

University of Oxford

G. Yassin

University of Oxford

Ernst Otto

Chalmers, Mikroteknologi och nanovetenskap (MC2), Kvantkomponentfysik

Leonid Kuzmin

Chalmers, Mikroteknologi och nanovetenskap (MC2), Kvantkomponentfysik

2015 8th Uk, Europe, China Millimeter Waves and Thz Technology Workshop

2378-8275 (ISSN)


Elektroteknik och elektronik