Hannover 2013 – scientific programme
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Q: Fachverband Quantenoptik und Photonik
Q 32: Quantum information: Atoms and ions III
Q 32.5: Talk
Tuesday, March 19, 2013, 15:15–15:30, A 310
Photon blockade meets electromagnetically induced transparency — •Haytham Chibani1, Eden Figueroa1, James Alves De Souza2, Celso Jorge Villas Boas2, and Gerhard Rempe1 — 1Max-Planck-Institute of Quantum Optics, Hans-Kopfermann-Str. 1, 85748 Garching, Germany — 2Universidade Federal de São Carlos, Departamento de Física, 13565-905 - Sao Carlos, SP - Brasil
One of the outstanding goals of quantum optics is the realization of controllable nonlinearities at the level of single quanta of matter and light. Here, we theoretically study the optical control of the quantum dynamics of a system which merges single-atom, cavity quantum electrodynamics with electromagnetically induced transparency, namely a three-level atom strongly coupled to a high-finesse cavity. We explore the photon statistics of the light emitted from the cavity by calculating the equal-time second-order intensity correlation function g(2)(0). We find a rich structure in the behavior of g2(0) which ranges from strong anti-bunching (g(2)(0) ≈ 0) to strong bunching (g(2)(0)≈ 100), and which can be optically tuned via the control field intensity. We also show that when the system is strongly driven, g2(0) shows two anti-bunching dips at different control field intensities resulting from a single photon and a two-photon blockade respectively. The observed quantum control paves the way towards the implementation of a novel quantum device which allows the switching and/or the attenuation of the amplitude noise of a laser beam.