Ruprecht Karls Universit├Ąt Heidelberg

Quantum Optics and Quantum Information



Our current research work focuses on the experimental and theoretical studies of quantum optics, especially applications in Quantum Information Processing. We investigate the interplay of interactions between light and matter, pursue robust long distance quantum communication, scalable quantum computation and quantum simulation.

Latest News:


28.03.2013 Moving to the New Institut ...









09.08.2012 We complement our colleagues in China on their fantastic experiment published in Nature
and the corresponding article appearing in the "Bild" daily newspaper...^_^


01.08.2012 Jian-Wei Pan receives the QMCM Quantum Communication Award 2012
'For his Pioneering Achievements in the Realization of Quantum Communication and Multiphoton Entanglement'



Latest Research Highlight:



Efficient and long-lived quantum memory with cold atoms inside a ring cavity

Nature Physics 8, 517 - 521 (2012) doi:10.1038/nphys2324

Putting a good spin (wave) on quantum memory - Arstechnica

Research group creates longer lived and more efficient quantum memory - Story on









Other Research Highlights:



Experimental demonstration of a heralded entanglement source

Nature Photonics 4, 549-552 (2010), DOI: 10.1038/nphoton.2010.123 (Press release, Presseerklärung)

Quantum optics: Entangled photons report for duty - News and Views, Nature Photonics (doi:10.1038/nphoton.2010.180)

Quantum physics: Entanglement for sure - Research Highlights, Nature China (doi:10.1038/nchina.2010.85)

Verschraenkung von Lichtteilchen - Universitaet Heidelberg, 10.09.2010

Ein Schritt naeher am Quantencomputer - Journal@RupertoCarola Ausgabe 7/10 vom 12. November 2010

Verschraenkung von Lichtteilchen - KompetenznetzeDeutschland, 10.09.2010

Verschraenkung von Lichtteilchen - Pro-Physik, 10.09.2010

Verschraenkung von Lichtteilchen - World of Photonics, 10.09.2010

Verschraenkung von Lichtteilchen - Informationsdienst Wissenschaft, 10.09.2010

Weltpremiere: Indirekte Messung von verschraenkten Lichtteilchen gelungen - derStandard 14.09.2010





A millisecond quantum memory for scalable quantum networks

Nature Physics (Advanced Online Publication) DOI: 10.1038/NPHYS1153 (Press release)










Experimental demonstration of a BDCZ quantum repeater node,

Nature 454, 1098-1101. (Press release)

Telegraph. co. uk, Aug. 28 2008
Physics Web , Aug. 28 2008
Nature News, Aug. 28 2008
University of Heidelberg Aug. 28 2008
Pro-physik, Aug. 29 2008
Wissenchaft-online , Aug. 29 2008







Memory-built-in quantum teleportation between photonic and atomic qubits.

Nature Physics 4, 103 - 107 (2008) . (Press Release)






OPN review: Scalable Quantum Computing with Linear Optics and Quantum Memories
Zhen-Sheng Yuan, Yu-Ao Chen, Shuai Chen , and Jian-Wei Pan
Optics & Photonics News 18, 34-39 (2007)







Demonstration of a Stable Atom-Photon Entanglement Source for Quantum Repeaters
Phys. Rev. Lett. 99, 180505 (2007)





"Experimental Realization of One-Way Quantum Computing with Two-Photon Four-Qubit Cluster States"

Phys. Rev. Lett. 99, 120503 (2007)



"Synchronized independent narrow-band single photons and efficient generation of photon entanglement"
Phys. Rew. Lett. 98, 180503 (2007)





"Experimental quantum teleportation of a two-qubit quantum composite system"
Nature Physics, 2,678 (2006).

Nature Physics, Oct. 10 2006 Cover Story
Nature Physics, Press releases, Sep. 21 2006
MIT Technology Research News, Sep. 18/25 2006
PhysORG, Sep. 18 2006










Kai Worsch, Marco Wagner