Welcome to the homepage of the quantum dynamics group

Head: Prof. G. Rempe

Research Projects:


Bose-Einstein- Condensation	Cavity Quantum Electrodynamics	Quantum Information Processing	Cold Polar Molecules

The Group:

Group Highlights:

December 2011: In its Christmas Issue, Physical Review Letters reports on our work on the "Storage and Adiabatic Cooling of Polar Molecules in a Microstructured Trap" by B. Englert et al.

December 2011: Markus Koch was awarded his PhD for his work on "Classical and Quantum Dynamics of a Strongly Coupled Atom-Cavity System".

September 2011: The whole group went to the Outdoorhotel Jäger von Fall for the annual group retreat.

August 2010: National Instruments (NI) decorates the fast feedback on the motion of a single atom trapped inside an optical cavity, which was realized by our Cavity QED team, with the "Application of the Year 2011", the "Advanced Research Award", and the "FPGA Innovation Award". Christian Sames receives the prizes at the NI-Week in Austin (Texas). More information can be found here.

August 2010: Carolin Hahn wins a poster prize at the Scottish Universities Summer School in Physics on "Quantum Information & Coherence".

August 2011: Nature Photonics reports on our work on remote entanglement and the single-atom quantum memory in their news and views section.

July 2011: Matthias Lettner was awarded his Ph.D for his work on "Ein Bose-Einstein-Kondensat als Quantenspeicher für Zwei-Teilchen-Verschränkung".

July 2011: Physik in unserer Zeit published an article on "Informationsaustausch am Quantenlimit" by Stephan Ritter.

July 2011: "Three-Photon Correlations in a Strongly Driven Atom-Cavity System" by M. Koch et al, published in Physical Review Letters.

June 2011: "Observation of squeezed light from one atom excited with two photons" by A. Ourjoumtsev et al has been published in Nature. See also the News & Views article in Nature. More information for the general audience can be found in our press release and on pro-physik.de.

June 2011: Martin Mücke was awarded his Ph.D for his work on "Elektromagnetisch induzierte Transparenz mit einem einzelnen Atom".

June 2011: Christian Sommer was awarded his Ph.D for his work on "Construction and Operation of a Cryogenic Source for Cold Polar Molecules".

May 2011: Our paper on "Remote Entanglement between a Single Atom and a Bose-Einstein Condensate" was selected for a Synopsis in Physics. More information for the general audience can also be found in our press release.

May 2011: "A single-atom quantum memory" by Holger Specht et al. has been published in Nature. The QGate team has realized the most fundamental implementation of an optical quantum memory: Arbitrary polarization states of light can be mapped into and out of a single atom trapped inside an optical cavity, achieving an average fidelity of 93% and storage times of more than 180µs. More information for the general audience can be found in our press release.

February 2011: In a joint effort, the BEC and Pistol teams have managed to create remote entanglement between a single atom and a Bose-Einstein condensate, situated in two independent labs separated by 13m. The fidelity with a maximally entangled Bell state is 95% and the matter-matter entanglement survives for 100µs. Details can be found in our paper.

Dezember 2010: Holger Specht was awarded his Ph.D for his work on "Einzelatom-Quantenspeicher für Polarisations-Qubits".

November 2010: Alexander Kubanek was awarded his Ph.D for his work on "Two-photon gateway and feedback control of a single atom in a cavity".

October 2010: "Localization of cold atoms in state-dependent optical lattices via a Rabi pulse" by Horstmann et al, published in Physical Review Letters.

October 2010: "Feedback Cooling of a Single Neutral Atom" by Markus Koch et al, published in Physical Review Letters, marked as Editors Suggestion.

September 2010: The whole group went to the Berggasthof Rechtegg for the annual group retreat.

More Highlights