News 

DPG Spring Meeting in Mainz


From March 6th to 10th 2017, the group attended the spring meeting of the Deutsche Physikalische Gesellschaft (DPG, German Physical Society). Seven members of the group presented their research work by giving three talks and presenting five posters. On Tuesday, three particularly daredevil members participated in the tower building contest of the jDPG (left picture). The group also visited the city center of Mainz, in particular, Mainz Cathedral (right picture).

Christmas party in Fürth

This years Christmas gathering took place in Fürth, where we visited the Christmas market and enjoyed some original "Christkindles" Christmas mulled wine. Later we had good German cuisine at "Stadtwappen" where we spend the rest of a cheerful evening.

New group members

We are happy to welcome some new members to our group: Michael Enders as a bachelor student and Uwe Frank and Stefan Richter as master students. Marc-Oliver Pleinert who finished his master thesis is working as a PhD-student now.

Excursion to Pottenstein


On July 5, our yearly excursion led us to nice hiking trails next to Pottenstein. In best weather we explored the "Großes Hasenloch" (left picture), enjoyed a good Franconian lunch and afterwards climbed the "Pottensteiner Himmelsleiter" (right picture).

New group members

We are happy to welcome some new members to our group: Daniel Häupl as a bachelor student and Manuela Meier and Karl Pelka who both did already their bachelor thesis here as master students.
Peter Deiml, Julian Wechs, Simon Theil and Felix Waldmann finished their work and we thank them for their contributions.

New group members

We are happy to welcome some new members to our group: Simon Theil as a bachelor student and Undine Schellhorn and André Pscherer as master students.

Lange Nacht der Wissenschaften - October 24, 2015

On October 24th, our group represented the optics institute at the Lange Nacht der Wissenschaften ('Long Night of Science'). As a phenomenon fundamental to quantum optics, we illustrated the wave-particly-duality to many interested visitors. Experiments like the photoelectic effect, Young's double slit experiment and others as well as further going discussions about modern fields of physics like e.g. quantum computing, have been provided to show the large stream of guests how interesting physics is.

Daniel Bhatti awarded with Ohm price - October 23, 2015

Daniel Bhatti


Daniel Bhatti, Ph.D. student in our group, was awarded with the Ohm price for his master's thesis 'Super- and Subradiance and Violation of Bell Inequalities with Classical Light Sources'.

New group members

We are happy to welcome some new members to our group: Christoph Biernoth as a bachelor student, Felix Waldmann and Marc-Oliver Pleinert, who both did already their bachelor thesis here as master students, and Daniel Bhatti, who did his master thesis here and is working as a PhD-student now.

New group members

We are happy to announce some people reinforcing our group: As bachelor students we welcome Manuela Meier and Sebastian Giebel.
Undine Schellhorn, Alexandra Popp, Karl Pelka, Matthias Krauss and Marc-Oliver Pleinert finished their work and we thank them for their contributions.

Excursion to the Fränkische Schweiz


This year's excursion on September 29 led our group to the "Fränkische Schweiz", where we climbed the Eibgrat in the best weather and enjoyed a good Franconian lunch afterwards.

New group members

We are happy to announce some people reinforcing our group: As bachelor students we welcome Alexandra Popp, Undine Schellhorn, Peter Deiml, Matthias Krauss and Marc Pleinert.

New group members

We are happy to announce some people reinforcing our group: As master students, Raimund Schneider and Anton Classen did join our group, while our former bachelor student Kevin Günthner returns to do his master thesis.
As bachelor students we welcome Thomas Kipf, Karl Pelka and Jens Holzmeier.

Ph. D. Steffen Oppel wins SAOT student award

Steffen Oppel


Steffen Oppel, former Ph.D. student in our group, has won the SAOT student award 2013 in Optical materials and Systems. The prize is awarded for his leading contribution and co-authorship in the publication Superresolving Multiphoton Interferences with Independent Light Sources, Phys. Rev. Lett. 109, 233603 (2012). The prize and the prize money (1000 Euro) will be handed out at the occasion of the SAOT Young Researcherís Award Ceremony which will take place on June 28, 2013. The keynote speaker at this ceremony will be last yearís nobelprize winner David Wineland.

Theoretical proposal from 2011 now realized and covered in New Scientist

In a theoretical proposal from 2011 our group had shown that it is possible to entangle two photons which do not exist at the same time (R. Wiegner et al., Optics Letters 36, 1512 (2011)). This can be demonstrated for example in a system of two atoms each emitting a single photon which are detected in the far field by two detectors such that the source of the photons is unknown. By registering the two photons at different locations (in this way sampling the spatial photon-photon correlation function) and post-selecting only on those events where the condition of non-existence of the two photons at the same time is fulfilled it is possible to violate a Bellís inequality. The violation of this inequality proves the entanglement of the two photons (see R. Wiegner et al., Optics Letters 36, 1512 (2011)). The theoretical proposal has now been implemented in a slightly different scheme by a group around Hagai Eisenberg (see E. Megidish et al., ArXiv: 1209.4191). Moreover, both works have been covered in an article by the journal New Scientist (see New Scientist, October 6, 2012, page 11).