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Towards polariton neuromorphic engineering | | Julian D. Töpfer
; Helgi Sigurdsson
; Lucinda Pickup
; Pavlos G. Lagoudakis
; | | Date: |
22 May 2019 | | Abstract: | The ubiquity of nonlinear oscillatory motion is perhaps best demonstrated
with a pendulum which is harmonic only at small angles. Just as the harmonic
oscillator provides a natural description of bosons in a quantum field, the
Stuart-Landau oscillator provides a universal description of nonlinear
oscillators close to a Hopf bifurcation. In the case of coupled nonlinear
oscillators, time-delayed interactions increase the complexity of many physical
systems ranging from coupled lasers, epidemiology, predator-prey, and road
traffic systems to neuronal networks. Here, we explore the phase-space of
ballistically coupled polariton condensates and demonstrate that the dynamics
of the system are driven by the Lang-Kobayashi equation, and in the limit of
fast relaxation of the exciton-reservoir feeding the condensates they can be
described by time-delayed coupled Stuart-Landau oscillators. The
controllability, complexity and similarity of ballistically coupled polariton
condensates to many physical interacting systems establishes a strong
motivation to apply polaritonics towards continuous recurrent artificial neural
networks and is the first step forward in realizing integrated time delayed
polariton networks for high speed optical neuromorphic computation. | | Source: | arXiv, 1905.9092 | | Services: | Forum | Review | PDF | Favorites | |
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