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Crystallization of photons via light storage in Rydberg gases

Matthias Moos, Johannes Otterbach, Dominik Muth +1 more

Bulletin of the American Physical SocietyJun 5, 20130 citations

Steady-state crystallization of Rydberg excitations in optically driven atomic ensembles

Michael Höning, David Petrosyan, Michael Fleischhauer

Bulletin of the American Physical SocietyJun 5, 20130 citations

Steady-state bistability and long-range order in optically driven Rydberg gases in the anti-blockade regime

Fabian Letscher, Dominik Linzner, Michael Fleischhauer

Bulletin of the American Physical SocietyMay 25, 20160 citations

Formation of Aggregates and Energy Transport in Ultracold Rydberg Interacting Gases

H. Schempp

This thesis investigates different aspects of strongly interacting ultracold Rydberg gases coupled by light, including the excitation of correlated structures called Rydberg aggregates and dipolar energy transport. For this purpose an experimental apparatus has been constructed. We study coherent population trapping (CPT) and electromagnetically induced transparency (EIT) involving Rydberg states. To study the formation of Rydberg aggregates we use full counting statistics (FCS) which makes it possible to infer the size of Rydberg aggregates. Dephasing during the excitation is found to have a dramatic effect on the formation process, leading to sequential growth around an initial grain. Rydberg state EIT is used to realize a new direct optical imaging scheme for Rydberg atoms which combines highly sensitive detection with high spatial and temporal resolution. Applying this technique we observe dipole-mediated energy transport processes between Rydberg atoms. We study classical transport in the presence of strong measurement induced decoherence. The strong interactions are seen to mediate long-range hopping significantly beyond nearest neighbors. We present first indications for coherent transport in this system. These experiments shed light on the role of correlations in the excitation and evolution of strongly interacting quantum systems and e.g. could possibly be used to model energy transport in biological systems. \nThis thesis investigates different aspects of strongly interacting ultracold Rydberg gases coupled by light, including the excitation of correlated structures called Rydberg aggregates and dipolar energy transport. For this purpose an experimental apparatus has been constructed. We study coherent population trapping (CPT) and electromagnetically induced transparency (EIT) involving Rydberg states. To study the formation of Rydberg aggregates we use full counting statistics (FCS) which makes it possible to infer the size of Rydberg aggregates. Dephasing during the excitation is found to have a dramatic effect on the formation process, leading to sequential growth around an initial grain. Rydberg state EIT is used to realize a new direct optical imaging scheme for Rydberg atoms which combines highly sensitive detection with high spatial and temporal resolution. Applying this technique we observe dipole-mediated energy transport processes between Rydberg atoms. We study classical transport in the presence of strong measurement induced decoherence. The strong interactions are seen to mediate long-range hopping significantly beyond nearest neighbors. We present first indications for coherent transport in this system. These experiments shed light on the role of correlations in the excitation and evolution of strongly interacting quantum systems and e.g. could possibly be used to model energy transport in biological systems. \n

Jan 1, 20140 citations

Open system quantum optics in photonic crystal chips with embedded quantum dots

Stephen Hughes

We present a formalism to study open-system quantum optics for photonic crystal chips with embedded quantum dots. We study resonance fluorescence (Mollow triplets), nonlinear photon transport and phonon-mediated population inversion using a continuous-wave drive.

Frontiers in OpticsJan 1, 20120 citations

Rydberg facilitated charge transport in an optical lattice

Rick Mukherjee, Igor Lesanovsky, Thomas Pohl

Bulletin of the American Physical SocietyMar 3, 20150 citations

Photon mediated transport and crystallization in optically driven Rydberg gases

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