Mainz 2017 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 40: Poster: Quantum Optics and Photonics II
Q 40.20: Poster
Mittwoch, 8. März 2017, 17:00–19:00, P OG2
Van der Waals interactions of Rydberg excitons — •Johannes Block and Stefan Scheel — Institut für Physik, Universität Rostock, Albert-Einstein-Strasse 23, D-18059 Rostock, Germany
Rydberg atoms experience strong van der Waals interactions due to their large dipole moments that result in a so-called Rydberg blockade [1,2]. Similarly, Rydberg excitons in semiconductors such as Cu2O with wavefunctions in the µm-range [3] are likely subject to strong van der Waals interactions. We apply well-known atomic calculations [2,4] to the excitonic system to obtain the Rydberg blockade. Here we show that the small level spacing including quantum defects [5] as well as the confining symmetry of the semiconductor crystal [6] provide additional contributions to the interaction.
[1] E. Urban et al., Nature Physics 5, 110 - 114 (2009).
[2] T.G. Walker, M. Saffman, Phys. Rev. A 77, 032723 (2008).
[3] T. Kazimierczuk et al., Nature 514, 343 (2014).
[4] J. Han, Phys. Rev. A 82, 052501 (2010).
[5] F. Schöne et al., J. Phys. B 49, 134003 (2016).
[6] H. Safari, M.R. Karimpour, Phys. Rev. Lett. 114, 013201 (2015).