Abstract
We experimentally characterize Hopf bifurcation phenomena at femtojoule energy scales in a multiatom cavity quantum electrodynamical (cavity QED) system and demonstrate how such behaviors can be exploited in the design of all-optical memory and modulation devices. The data are analyzed by using a semiclassical model that explicitly treats heterogeneous coupling of atoms to the cavity mode. Our results highlight the interest of cavity QED systems for ultralow power photonic signal processing as well as for fundamental studies of mesoscopic nonlinear dynamics.
Highlights
We experimentally characterize Hopf bifurcation phenomena at femtojoule energy scales in a multiatom cavity quantum electrodynamical system and demonstrate how such behaviors can be exploited in the design of all-optical memory and modulation devices
The diverse phenomena of cavity nonlinear optics [1] provide a rich basis for fundamental studies of dissipative nonlinear dynamics [2,3] and for the design of photonic signal processing devices [4]
One of the lessexplored 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
Summary
We experimentally characterize Hopf bifurcation phenomena at femtojoule energy scales in a multiatom cavity quantum electrodynamical (cavity QED) system and demonstrate how such behaviors can be exploited in the design of all-optical memory and modulation devices. One of the lessexplored 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.
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