Quantum Dot Channel FETs Harnessing Mini-Energy Band Transitions in GeOx-Ge and Si QDSL for Multi-Bit Computing

Abstract

This paper presents multi-state quantum dot channel (QDC) FETs incorporating cladded quantum dots forming a novel superlattice (QDSL) as the transport channel. Harnessing QDSL mini-energy band transitions as well as the encoding of spatial location of carriers in the upper or lower quantum dot channels is utilized to obtain 8- and 16-logic states. Potentially, 32-logic states can be achieved by additionally incorporating QDSL between tunnel oxide and gate. This maybe an interim alternative to sub-milliKelvin Si/SiGe qubits.