Laser processing for quantum research


Researchers at the microtechnology research centre at the Vorarlberg University of Applied Sciences (FHV - Vorarlberg University of Applied Sciences) can use an ultrashort pulse laser to produce actuators (electrically movable components) from the extremely brittle and temperature-sensitive piezo material PMN-PT. Such actuators are important in quantum research, for example.

a) Piezo actuator fabricated at the FHV using laser cutting and patterning; b) Quantum dot photon source bonded to the actuator shown in a). © FHV

By selective biasing by means of the actuators, photon sources can be fine-tuned in their emission properties and the robust emergence of entangled photon pairs can be realized. The FHV actuators have been used successfully for many years at Johannes Kepler University in Linz in the field of quantum optics. The project, "Investment in a UV Laser Processing Facility" (project identification number 1GAADA_01828), is co-funded by the European Regional Development Fund (ERDF) in Austria.

June 2022