Hannover 2010 – scientific programme

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Q: Fachverband Quantenoptik und Photonik

Q 1: Quantum Effects: Light Scattering and Propagation I / Interference and Correlations I

Q 1.4: Talk

Monday, March 8, 2010, 14:45–15:00, A 310

Phase dependent dynamics in a loop of microresonators — •Sandra Isabelle Schmid, Keyu Xia, and Jörg Evers — Max-Planck Institut für Kernphysik, Heidelberg, Germany

In recent years, chains of coupled microcavities have received considerable attention [1]. Here, we study arrays of microresonators which are arranged in a loop configuration [2]. This allows photons to travel along closed loop pathways and thereby gives rise to quantum interference between different evolution pathways in the microresonators [3]. As our model system, we consider three whispering gallery mode microresonators which are coupled via their evanescent fields. In addition, one of the resonators is coupled to a tapered fiber, and we use the transmitted and reflected light as observables. In particular, we study the interplay of the different pathways a photon can take in scattering from the input to an output mode of the fiber. We show that due to the loop configuration, the optical properties of the resonator structure become dependent on the phases of the complex coupling constants describing the coupling of the different resonators. Finally, possible applications are discussed.

[1] M. A. Popovic et al., Optics Express 14, 3 (2006); M. Hammer, Opt. Quantum Electron., 40, 821 (2008)

[2] M. A. Popovic et al., Conference on lasers and electro optics, 1-9, 1600 (2008)

[3] M. Mahmoudi and J. Evers, Phys. Rev. A 74, 063827 (2006)