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.
|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".