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Updated: Oct 15, 2025

Generation and Coherent Control of Pulsed Quantum Frequency Combs
Published on: June 8, 2018
Ubiquity of ring structures in the control space of complex oscillators
Gonzalo Marcelo Ramírez-Ávila1, Jürgen Kurths2, Jason A C Gallas1
1Instituto de Investigaciones Físicas, Universidad Mayor de San Andrés, La Paz, Bolivia.
Abstract:
We report the discovery of two types of stability rings in the control parameter space of a vertical-cavity surface-emitting semiconductor laser. Stability rings are closed parameter paths in the laser control space. Inside such rings, laser stability thrives even in the presence of small parameter fluctuations. Stability rings were also found in rather distinct contexts, namely, in the way that cancerous, normal, and effector cells interact under ionizing radiation and in oscillations of an electronic circuit with a junction-gate field-effect transistor (JFET) diode. We argue that stability-enhancing rings are generic structures present in the control parameter space of many complex systems.
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