Experimental evidence of quint points and non-quantum chirality in a minimalist autonomous electronic oscillator
Laboratory of Nonlinear Systems, Circuits & Complexity (LaNSCom), Physics Department, Aristotle University of Thessaloniki, 54124, Thessaloniki, Greece
2 Max-Planck Institute for the Physics of Complex Systems, Nöthnitzer Str. 38, 01187, Dresden, Germany
3 Instituto de Altos Estudos da Paraíba, Rua Silvino Lopes 419-2502, 58039-190, João Pessoa, Brazil
4 Complexity Sciences Center, 9225 Collins Avenue Suite 1208, FL 33154, Surfside, USA
Accepted: 21 December 2021
Published online: 22 January 2022
Recent intensive simulations have uncovered remarkable phenomena in stability diagrams of classical oscillators, for instance, quint points, parameter rings, and chiral structures of non-quantum origin. So far, their experimental observation has remained elusive. Here, using a simple electronic circuit, we report the experimental detection of five phases of oscillation spread around a quint point, an exceptional point where five oscillatory modes meet. This finding corroborates predictions of non-quantum chirality in the control parameter space of nonlinear oscillators governed by rate equations.
© The Author(s) 2022
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