2019/01/31 by Leon Bello, Marcello Calvanese Strinati, Emanuele G. Dalla Torre +1 · 3 citations
Physics and Astronomy · #nlin.CD #physics.optics #quant-ph
paper · pdf · doi:10.1103/physrevlett.123.083901
published as Phys. Rev. Lett. 123, 083901 (2019) · 6 pages and 4 figures for the main text, 2 pages and 1 figure for supplemental material. Updated version after publication in Phys. Rev. Lett
arxiv created 2019/08/23 · arxiv updated 2019/08/26
Coupled parametric oscillators were recently employed as simulators of artificial Ising networks, with the potential to solve computationally hard minimization problems. We demonstrate a new dynamical regime within the simplest network - two coupled parametric oscillators, where the oscillators never reach a steady state, but show persistent, full-scale, coherent beats, whose frequency reflects the coupling properties and strength. We present a detailed theoretical and experimental study and show that this new dynamical regime appears over a wide range of parameters near the oscillation threshold and depends on the nature of the coupling (dissipative or energy preserving). Thus, a system of coupled parametric oscillators transcends the Ising description and manifests unique coherent dynamics, which may have important implications for coherent computation machines.