Leiden University Student Repository

Persistent URL of this record https://hdl.handle.net/1887/133070

Documents

    • Master thesis
    • closed access

In Collections

This item can be found in the following collections:

Kanneworff, Kirsten Naomi (2020)

Electrical Characterisation and Critical Behaviour of Superconducting Single Photon Detectors

Master thesis | Physics (MSc)
We investigate both the electrical response of Superconducting Single Photon Detectors (SSPDs) and the critical behaviour behind the superconducting phase transition. It is found that the existence of the intermediate state and corresponding relaxation oscillations are paramount for the self-reset of SSPDs and resulting photon detection. The superconducting transition in the discussed SSPDs is set by the thermal unbinding of vortices following the behaviour set by the BKT phase transition. However, the critical behaviour at low temperatures is set by the depairing of Cooper pairs which is the dominant process.
single photon detector
superconductor
BKT transition
thermal relaxation oscillation
Author
Kanneworff, Kirsten Naomi
Faculty
Faculty of Science
Specialisation
MA
Supervisors
Dood, Michiel
ECTS Credits
3
Language
en