Quantum Atom Optics

grouppicture Quantum Atom Optics in front of the main building of the Leibniz University Hannover grouppicture Quantum Atom Optics in front of the main building of the Leibniz University Hannover grouppicture Quantum Atom Optics in front of the main building of the Leibniz University Hannover © Institut für Quantenoptik, Carsten Klempt

The working group "Quantum Atom Optics" generates non-classical states in atomic Bose-Einstein condensates and investigates new methods for precision metrology. A Bose-Einstein condensate (BEC) consists of ultracold atoms, all in the same quantum state as photons in a laser beam. As part of our work, we are investigating the entanglement between the atoms in the BEC. Entanglement is a form of very strong correlations that can only be described with the help of quantum mechanics. We use entanglement to perform fundamental experiments, such as the generation of Einstein-Podolsky-Rosen entanglement, or to open up new ways for precision measurements, such as the realization of an atomic clock beyond the standard quantum limit.

EXPERIMENTS

Spinor BEC

In this experiment we use spin-changing collisions of atoms to create entangled states. The resulting entanglement is interesting to investigate fundamental concepts of quantum mechanics and has a concrete application in atomic interferometry. Here the entanglement enables a measurement accuracy above the classical limit.

Mesoscopic atom chip

The goal of the mesoscopic atom chip experiment is to build a fast and sequential source of Bose-Einstein condensates and to realize a continuous atom laser.

GROUP LEADER

Prof. Dr. Wolfgang Ertmer
Address
Welfengarten 1
30167 Hannover
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Room
Address
Welfengarten 1
30167 Hannover
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apl. Prof. Dr. Carsten Klempt
Address
Welfengarten 1
30167 Hannover
Building
Room
apl. Prof. Dr. Carsten Klempt
Address
Welfengarten 1
30167 Hannover
Building
Room