Jérôme Faist (* January 23, 1962 in Geneva[3]) is a Swiss physicist and since 2007 professor at the institute of quantum electronics at ETH Zürich.

Jérôme Faist attended the EPF Lausanne under Franz-Karl Reinhart where he obtained his Bachelor's degree in 1985 and his Ph.D. in Optoelectronics in 1989.

In 1991, he switched to Federico Capasso's group in Bell Laboratories Lucent Technologies in Murray Hill, New Jersey where he first worked as a post-doc and then as a Member of Technical Staff.

In 1994, he succeeded in building an experimental quantum cascade laser using molecular-beam epitaxy collaboratively with Federico Capasso, Deborah Sivco, Carlo Sirtori, Albert Hutchinson and Alfred Y. Cho[4][5][3] In 1997, Faist became Full Professor at the University of Neuchâtel, Neuchâtel, Switzerland, where he remained until 2007.

His current research interests are the development of high performance quantum cascade lasers in the mid and far-infrared and the physics of coherence in intersubband transitions in the presence of strong magnetic fields.