Refractory times for excitable dual-state quantum dot laser neurons

Excitable photonic systems show promise for ultrafast analog computation, several orders of magnitude faster than biological neurons. Optically injected quantum dot lasers display several excitable mechanisms with dual -state quantum lasers recently emerging as true all-or-none excitable artificial neurons. For use in applications, deterministic triggering is necessary and this has previously been demonstrated in the literature. In this work we analyze the crucially important refractory time for this dual-state system, which defines the minimum time between distinct pulses in any train.

Automated summary

Excitable photonic systems have potential for ultrafast analog computation, much faster than biological neurons. Recently, dual-state quantum dot lasers have emerged as true all-or-none excitable artificial neurons. Deterministic triggering is necessary for applications and has been demonstrated in previous research. This work analyzes the crucial refractory time of the dual-state system, which defines the minimum time between distinct pulses in any train.