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Universität zu Köln
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Mathematisch-Naturwissenschaftliche Fakultät
Fachgruppe Physik

I. Physikalisches Institut

Practical Course M: I–V Characteristics of an SIS Tunnel Junction under Irradiation of Millimeter Waves

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Content

In this experiment, you will be introduced to the basic properties of superconducting tunnel junctions that we develop and fabricate in our labs to use them as extremely sensitive (quantum) detectors in our submillimeter wave receivers for astronomy. In addition to measuring the current-voltage characteristics at 4.2 Kelvin, as a highlight you will measure the energy of photons at 350 GHz. Quantum physics with an oscilloscope!

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Tutorial

Assistant

Dr. Karl Jacobs – Room 303 – Tel. 3484

Recommended reading

An extensive literature list is included in the tutorial.