[TuP3A] Epitaxy and process

2:00 PM - 4:00 PM JST(5:00 AM - 7:00 AM UTC)

[TuP3A-24 LN] Miniband-Mediated Physical Reservoir Computing in Ultrahigh-Density InAs/InAsSb Quantum Dot Networks

〇Sim Jui Oon¹ (1. The Univ. of Electro-Communications (Japan))

This work presents the first demonstration of Physical Reservoir Computing (PRC) using self-assembled quantum dots (QDs), realized through Si-doped InAs/InAsSb ultrahigh-density (UHD) QD networks with a dot density of 6.4 x 10¹¹ cm^-2. Miniband-mediated transport arising from sub-4 nm inter-dot spacing generates a high-dimensional nonlinear state space with inherent fading memory. The UHD QD networks achieved more than 92% accuracy in waveform reconstruction task, an NMSE of 0.103, and memory capacity (MC) of 3.02 in the NARMA2 benchmark, outperforming nanoparticle networks and comparable to atomic switch networks, establishing self-assembled UHD QD networks as a promising neuromorphic hardware platform.