# Kastler–Brossel Laboratory

> quantum research laboratory in Paris, France

**Wikidata**: [Q3214375](https://www.wikidata.org/wiki/Q3214375)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Kastler–Brossel_Laboratory)  
**Source**: https://4ort.xyz/entity/kastlerbrossel-laboratory

## Summary
The Kastler–Brossel Laboratory (LKB) is a prominent research institute focused on quantum physics located in Paris, France. Founded in 1951, it operates as a joint research unit (Unité Mixte de Recherche) under the supervision of major French institutions including the CNRS, the École Normale Supérieure, and Sorbonne Université. The laboratory is recognized for its foundational work in quantum mechanics and atomic physics.

## Key Facts
- **Founded:** 1951
- **Location:** 24 Rue Lhomond, 5th arrondissement of Paris, France (Coordinates: 48.843124, 2.346715)
- **Primary Field:** Quantum physics
- **Director:** Nicolas Treps (Start date: January 2025)
- **Classification:** Research institute; French UMR (Unité Mixte de Recherche) 8552
- **Parent Organizations:** Collège de France, National Center for Scientific Research (CNRS), École Normale Supérieure, Pierre and Marie Curie University, Sorbonne Universités.
- **Website:** https://www.lkb.fr/
- **Identifiers:** ROR ID: 01h14ww21; GRID ID: grid.462576.4; ISNI: 0000000403685631.

## FAQs
### Q: Where is the Kastler–Brossel Laboratory located?
A: The laboratory is headquartered at 24 Rue Lhomond in the 5th arrondissement of Paris, France.

### Q: What is the primary field of research for the Kastler–Brossel Laboratory?
A: The laboratory specializes in quantum physics and is classified as a quantum research laboratory.

### Q: Who operates the Kastler–Brossel Laboratory?
A: It is a joint research unit operated by the National Center for Scientific Research (CNRS), the École Normale Supérieure, the Collège de France, and Sorbonne Universités (formerly Pierre and Marie Curie University).

### Q: When was the laboratory founded?
A: The Kastler–Brossel Laboratory was established in 1951.

## Why It Matters
The Kastler–Brossel Laboratory is one of the leading physics laboratories in France and a significant center for quantum research globally. Established in 1951, it represents a long-standing collaboration between prestigious institutions, including the École Normale Supérieure and the Collège de France. As a Unité Mixte de Recherche (UMR 8552), it plays a critical role in the European scientific landscape, advancing the understanding of quantum mechanics. Its strategic location in Paris and its association with the CNRS underscore its importance as a hub for high-level physics research and training.

## Notable For
- **Historical Foundation:** Established in 1951, making it a long-standing institution in the field of physics.
- **Strategic Partnerships:** Operates as a collaborative unit (UMR 8552) between the CNRS, École Normale Supérieure, and Sorbonne University.
- **Specialization:** Exclusively dedicated to the field of quantum physics.
- **Leadership:** Directed by physicist Nicolas Treps as of 2025.

## Body

### Governance and Leadership
The Kastler–Brossel Laboratory functions as a "French UMR" (Unité Mixte de Recherche), specifically identified as **UMR8552**. This status denotes a shared governance structure involving multiple parent organizations. The laboratory is administered by the **National Center for Scientific Research (CNRS)**, the **École Normale Supérieure (ENS)**, **Sorbonne Universités**, and the **Collège de France**. Historical records also list the **Pierre and Marie Curie University** as a parent entity.

As of January 2025, the leadership of the laboratory is held by **Nicolas Treps**, who serves as the CEO/Director.

### Location and Facilities
The laboratory is situated in the heart of Paris.
- **Address:** 24 Rue Lhomond, Paris 75005.
- **Arrondissement:** 5th arrondissement of Paris.
- **Postal Code:** 75231.
- **Coordinates:** Latitude 48.843124, Longitude 2.346715.

### Research and Identity
The laboratory's primary field of work is **quantum physics**. It is recognized internationally under various aliases, including **LKB** and **Laboratoire Kastler Brossel**. The facility maintains a digital presence at `https://www.lkb.fr/` and is indexed in numerous global academic databases, including ROR (01h14ww21), ISNI (0000000403685631), and the French National Research Structure ID (199812880N).

## References

1. [Source](https://scanr.enseignementsup-recherche.gouv.fr/entite/199812880N)
2. [Source](https://appliweb.dgri.education.fr/rnsr/PresenteStruct.jsp?numNatStruct=199812880N&PUBLIC=OK)
3. GRID Release 2017-01-10
4. [Source](http://www.lkb.upmc.fr/presentation-du-laboratoire/)
5. ROR release v1.19
6. GRID Release 2016-12-06
7. French National Directory of Research Structures
8. Microsoft Academic Knowledge Graph