Laboratoire Kastler Brossel
A joint research unit of the Ecole Normale Supérieure, Sorbonne University, the College de France and the National Centre for Scientific Research (CNRS), the Laboratoire Kastler Brossel (LKB) is one of the main leaders worldwide in the field of quantum physics.
It counts 3 Nobel Prizes and its research has led to the creation of 4 start-ups, thus combining scientific excellence with a spirit of innovation.
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Events
DigiQ Paris Summer School 2026
June 29th – July 2nd
News
Find out what’s new at the laboratory and follow us every day on Bluesky.
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“Le Monde” – Optical component enables efficient neural network training
New publication: Sylvain Gigan is a co-author
Glass Technology for Quantum Research
Glass technicians from Stuttgart and Paris exchange specialized techniques.[Article written by the University of Stuttgart.]
Non-destructive optical read-out and manipulation of circular Rydberg atoms
New publication from the Rydberg Atoms team : Yohann Machu, Andrés Durán-Hernández, Gautier Creutzer, Aurore Alice Young, Jean-Michel Raimond, Michel Brune, Clément Sayrin
The quantum key to seeing through chaos
New publication by Sylvain Gigan (LKB), Baptiste Courme (LKB), Hugo Defienne (INSP), Daniele Faccio (University of Glasgow), Chloé Vernière (INSP), Malo Joly and Raphael Guitter (co-authors)
Research topics
The Laboratoire Kastler Brossel, supported by 11 research teams, focuses its work in the field of quantum physics divided in 4 areas, along with a cross-disciplinary area dedicated to the practical applications of its research.
Our community
Our locations
The LKB is located in three different places within the fifth arrondissement of Paris (France).
– The Ecole Normale Supérieure is one of the most prestigious institutions in the world, attracting the brightest students and researchers. Its campus offers a stimulating intellectual environment and fosters academic excellence in many disciplines.
– Sorbonne University, established in 2018 from the merger of Paris-Sorbonne University and Pierre and Marie Curie University, is a multidisciplinary institution in Paris. It offers programs in the humanities, sciences, engineering, and medicine, and is distinguished by its innovative research and involvement in European research and training programs.
– The Collège de France, founded in 1530, has a long tradition of academic excellence. Its campus houses classrooms and lecture theatres steeped in history, providing an inspiring environment for students and researchers.
Our staff
Meet the laboratory members! Our team is mainly composed of young researchers with nearly 60 researchers and teacher-researchers and over 100 PhD students and post-doc. In addition, 25 scientific research support staff contribute to the laboratory’s achievements through their administrative and technical activities.
Consult the staff directory
Jobs
Find out about recruitment opportunities at Laboratoire Kastler Brossel, a place where knowledge is constantly evolving. Whether you’re a beginner or experienced, join our laboratory!
Consult our job offers