Rydberg blockade for manipulating atomic and photonic qubits
Prof Philippe Grangier, Institut d'Optique, Palaiseau, France
In this talk I will present recent experiments using Rydberg blockade as a tool for either entangling atomic qubits [1, 2], or for creating very large optically non-linear effects  that could be applied to process photonic qubits, or to prepare highly non-classical states .
 "Observation of collective excitation of two individual atoms in the Rydberg blockade regime", A. Gaetan et al, Nature Physics 5, 115 (2009)
 "Entanglement of Two Individual Neutral Atoms Using Rydberg Blockade", T. Wilk et al, Phys. Rev. Lett. 104, 010502 (2010)
 "Observation and Measurement of Interaction-Induced Dispersive Optical Nonlinearities in an Ensemble of Cold Rydberg Atoms", V. Parigi et al, Phys. Rev. Lett. 109, 233602 (2012)
 "Generating non-Gaussian states using collisions between Rydberg polaritons", J. Stanojevic et al, Phys. Rev. A 86, 021403 (2012)
The Distinguished Lecturer Series (DLS) follows a colloquium format for a broad audience and will be followed by a reception to provide an opportunity for meeting the speaker.