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Refractory times for excitable dual-state quantum dot laser neurons
M Dillane1,2,3, E A Viktorov4,5, B Kelleher1,2
1School of Physics, University College Cork, T12 K8AF Cork, Ireland.
Dual-state quantum lasers act as artificial neurons for ultrafast analog computing. This study analyzes their refractory time, crucial for controlling pulse trains in photonic systems.
Area of Science:
- Photonics
- Artificial intelligence
- Quantum optics
Background:
- Excitable photonic systems offer potential for ultrafast analog computation, significantly exceeding biological neuron speeds.
- Dual-state quantum lasers have emerged as effective all-or-none excitable artificial neurons.
- Deterministic triggering of these artificial neurons has been previously established.
Purpose of the Study:
- To analyze the refractory time of dual-state quantum lasers.
- To understand the minimum time interval between distinct output pulses in these systems.
Main Methods:
- Experimental analysis of dual-state quantum laser dynamics.
- Investigation of pulse train generation and timing characteristics.
Main Results:
- Characterization of the refractory period in dual-state quantum lasers.
- Quantification of the minimum time between successive output pulses.
Conclusions:
- The refractory time is a critical parameter for controlling pulse trains in dual-state quantum laser artificial neurons.
- Understanding refractory time is essential for practical applications of these photonic computing systems.
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