After three years of military service, he joined the research group of Nobel Laureate Pierre-Gilles de Gennes at the university of Paris-Sud (Orsay).

In 1971, Deutsche immigrated to Israel and joined the Department of Physics at Tel Aviv University, where he spent his entire career.

[6] He developed a new direction of research on experimental low-temperature physics, with particular emphasis on granular superconductors, disordered media, metal-insulator and superconductor-semiconductor transitions properties of thin superconducting films and Josephson junctions.

Deutscher's insight into the short coherence length of cuprates led to the first accepted explanation for the low critical current in ceramic and polycrystalline samples of these materials.

[citation needed] Deutscher's group also pioneered the use of Andreev reflections to study the electronic properties of high-temperature superconductors.