Yeong-Dae Kwon, Michael A. Armen, Hideo Mabuchi
The diverse phenomena of cavity nonlinear optics provide a rich basis for fundamental studies of dissipative nonlinear dynamics and for the design of photonic signal processing devices. Recent experiments exploiting resonant atomic nonlinearities and/or nanophotonic cavities have demonstrated that such phenomena can occur at very low (femtojoule-attojoule) energy scales in prototypical systems, reaching down to the quantum-physical few photon regime and raising intriguing prospects for corresponding ultra-low power photonic information technology. One of the less-explored dimensions of this developing scenario is the surprising complexity of dynamical behaviors, beyond simple thresholding and bistability, that can be achieved at low energy scales in cavities incorporating two-level atoms or comparable solid-state emitters. In this Letter we present experimental data on sub-critical Hopf bifurcation phenomena in an atom-cavity system and demonstrate a novel device configuration that latches a logic level and provides rf modulation of the output signal at the same time.
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http://arxiv.org/abs/1305.1077
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