DATE 2012-12-03 -------------------------------------------------------------------------------- TIME 12:10-13:30 -------------------------------------------------------------------------------- PLACE R49223, Second Physics Building , NCKU -------------------------------------------------------------------------------- FIELD Quantum Information Science -------------------------------------------------------------------------------- SPEAKER Prof. Ray-Kuang Lee(李瑞光) - 清華大學 光電工程研究所 -------------------------------------------------------------------------------- TITLE Interacting qubits within Cavity-QED -------------------------------------------------------------------------------- ABSTRACT The stability analysis of a generalized Dicke model, in the semi-classical limit, describing the interaction of an ensemble of interacting qubits driven by a quantized field is presented. The transitions from Rabi to Josephson dynamics are identified depending on the relative value of the involved parameters. Moreover, we reveal the existence of polariton soliton solutions in the array of weakly coupled cavity-qubits system. Bright solitons are found to be supported under perturbations only in the upper (optical) branch of polaritons, for which the corresponding group velocity is controlled by tuning the interacting strength. --

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