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Project A8

Interacting Rydberg Excitons in Modulated Potential Landscapes

Rydberg excitons with wavefunction extensions up into the μm-range are attractive for studying confinement and interaction ef­fects on much larger length scales than ground state excitons, which typically can be confined in nanostructures only. Recent studies of Rydberg excitons in cuprous oxide have demonstrated that an accurate description of these ef­fects requires the inclusion of band structure details and, in particular, exciton orbital and spin angular momenta. With our current understanding obtained on bulk crystals, we will attempt to tailor the interactions by exciting excitons in designed potential landscapes which can be created, for example, by varying the size and geometry of the sample, by applying strain to crystal slabs through shaped pistons, or by optical lattices formed by counter-propagating laser beams. With these tools, potentials with extensions comparable to the Rydberg exciton size can be achieved. Besides cuprous oxide, we will study wide (bulk-like) GaAs quantum wells for comparison, providing different optical selection rules.

Research Staff

Researcher Affiliation Position
Prof. Dr. Manfred Bayer TU Dort­mund Principal Investigator
Jun.-Prof. Dr. Marc Aßmann TU Dort­mund Principal Investigator
Dr. Marina A. Semina Ioffe In­sti­tute Principal Investigator
Prof. Dr. Mikhail M. Glazov Ioffe In­sti­tute Principal Investigator
Prof. Dr. Ivan V. Ignatiev St. Petersburg State Uni­ver­sity Principal Investigator
Dr. Philipp S. Grigoryev St. Petersburg State Uni­ver­sity Associated Scientist
Dr. Gleb G. Kozlov St. Petersburg State Uni­ver­sity Associated Scientist
Dr. Artur V. Trifonov St. Petersburg State Uni­ver­sity Associated Scientist

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Location & approach

The campus of TU Dort­mund Uni­ver­sity is located close to interstate junction Dort­mund West, where the Sauerlandlinie A 45 (Frankfurt-Dort­mund) crosses the Ruhrschnellweg B 1 / A 40. The best interstate exit to take from A 45 is "Dort­mund-Eichlinghofen" (closer to Cam­pus Süd), and from B 1 / A 40 "Dort­mund-Dorstfeld" (closer to Cam­pus Nord). Signs for the uni­ver­si­ty are located at both exits. Also, there is a new exit before you pass over the B 1-bridge leading into Dort­mund.

To get from Cam­pus Nord to Cam­pus Süd by car, there is the connection via Vo­gel­pothsweg/Baroper Straße. We recommend you leave your car on one of the parking lots at Cam­pus Nord and use the H-Bahn (suspended monorail system), which conveniently connects the two campuses.

TU Dort­mund Uni­ver­sity has its own train station ("Dort­mund Uni­ver­si­tät"). From there, suburban trains (S-Bahn S1) leave for Dort­mund main station ("Dort­mund Hauptbahnhof") and Düsseldorf main station via the "Düsseldorf Airport Train Station" (take S-Bahn S1, which leaves every 20 or 30 minutes). The uni­ver­si­ty is easily reached from Bochum, Essen, Mülheim an der Ruhr and Duisburg.

You can also take the bus or subway train from Dort­mund city to the uni­ver­si­ty: From Dort­mund main station, you can take any train bound for the Station "Stadtgarten", usually lines U41, U45, U 47 and U49. At "Stadtgarten" you switch trains and get on line U42 towards "Hombruch". Look out for the Station "An der Palmweide". From the bus stop just across the road, busses bound for TU Dort­mund Uni­ver­sity leave every ten minutes (445, 447 and 462). Another option is to take the subway routes U41, U45, U47 and U49 from Dort­mund main station to the stop "Dort­mund Kampstraße". From there, take U43 or U44 to the stop "Dort­mund Wittener Straße". Switch to bus line 447 and get off at "Dort­mund Uni­ver­si­tät S".

The AirportExpress is a fast and convenient means of transport from Dort­mund Airport (DTM) to Dort­mund Central Station, taking you there in little more than 20 minutes. From Dort­mund Central Station, you can continue to the uni­ver­si­ty campus by interurban railway (S-Bahn S1). A larger range of in­ter­na­tio­nal flight connections is offered at Düsseldorf Airport (DUS), which is about 60 kilometres away and can be directly reached by S-Bahn S1 from the uni­ver­si­ty station.

The H-Bahn is one of the hallmarks of TU Dort­mund Uni­ver­sity. There are two stations on Cam­pus Nord. One ("Dort­mund Uni­ver­si­tät S") is directly located at the suburban train stop, which connects the uni­ver­si­ty directly with the city of Dort­mund and the rest of the Ruhr Area. Also from this station, there are connections to the "Technologiepark" and (via Cam­pus Süd) Eichlinghofen. The other station is located at the dining hall at Cam­pus Nord and offers a direct connection to Cam­pus Süd every five minutes.

The facilities of TU Dort­mund Uni­ver­sity are spread over two campuses, the larger Cam­pus North and the smaller Cam­pus South. Additionally, some areas of the uni­ver­si­ty are located in the adjacent "Technologiepark".

Site Map of TU Dort­mund Uni­ver­sity (Second Page in English).