Stochastic transition in synchronized spiking nanooscillators

Qiu, Erbin; Salev, Pavel; Torres, Felipe; Navarro, Henry; Dynes, Robert C.; Schuller, Ivan K.

doi:10.1073/pnas.2303765120

Title: Stochastic transition in synchronized spiking nanooscillators

Journal Article · 11 September 2023 · Proceedings of the National Academy of Sciences of the United States of America

DOI: https://doi.org/10.1073/pnas.2303765120 · OSTI ID:1999324

^[1]; Salev, Pavel ^[2];

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Univ. of California, San Diego, La Jolla, CA (United States)
Univ. of Denver, CO (United States)
University of Chile, Santiago (Chile)

This work reports that synchronization of Mott material-based nanoscale coupled spiking oscillators can be drastically different from that in conventional harmonic oscillators. We investigated the synchronization of spiking nanooscillators mediated by thermal interactions due to the close physical proximity of the devices. Controlling the driving voltage enables in-phase 1:1 and 2:1 integer synchronization modes between neighboring oscillators. Transition between these two integer modes occurs through an unusual stochastic synchronization regime instead of the loss of spiking coherence. In the stochastic synchronization regime, random length spiking sequences belonging to the 1:1 and 2:1 integer modes are intermixed. The occurrence of this stochasticity is an important factor that must be taken into account in the design of large-scale spiking networks for hardware-level implementation of novel computational paradigms such as neuromorphic and stochastic computing.

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Research Organization:: Univ. of California, San Diego, CA (United States); Energy Frontier Research Centers (EFRC) (United States). Quantum Materials for Energy Efficient Neuromorphic Computing (Q-MEEN-C)

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES); US Air Force Office of Scientific Research (AFOSR); USDOE

Grant/Contract Number:: SC0019273; FA9550-22-1-0135; # DE-SC0019273

OSTI ID:: 1999324

Alternate ID(s):: OSTI ID: 2472219

Journal Information:: Proceedings of the National Academy of Sciences of the United States of America, Vol. 120, Issue 38; ISSN 0027-8424

Publisher:: National Academy of SciencesCopyright Statement

Country of Publication:: United States

Language:: English

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Science & Technology - Other Topics
spiking oscillators
thermal coupling
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stochastic transition
time domain phase coexistence

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