Philippe Grangier - 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 [3] that could  be applied to process photonic qubits, or to prepare highly non-classical states [4].

[1] "Observation of collective excitation of two individual atoms in the Rydberg blockade regime", A. Gaetan et al, Nature Physics 5, 115 (2009)

[2] "Entanglement of Two Individual Neutral Atoms Using Rydberg Blockade", T. Wilk et al, Phys. Rev. Lett. 104, 010502 (2010)

[3] "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)

[4] "Generating non-Gaussian states using collisions between Rydberg polaritons", J. Stanojevic et al, Phys. Rev. A 86, 021403 (2012)

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