Related Experiment Video
Updated: Jul 23, 2026

Automated Robotic Liquid Handling Assembly of Modular DNA Devices
Published on: December 1, 2017
Digital logic gate using quantum-Dot cellular automata
1Department of Electrical Engineering, University of Notre Dame, Notre Dame, IN 46556, USA. Neuromorphic Information Technology Graduate Center, Budapest, Kende-u.13, H-1111, Hungary.
Abstract:
A functioning logic gate based on quantum-dot cellular automata is presented, where digital data are encoded in the positions of only two electrons. The logic gate consists of a cell, composed of four dots connected in a ring by tunnel junctions, and two single-dot electrometers. The device is operated by applying inputs to the gates of the cell. The logic AND and OR operations are verified using the electrometer outputs. Theoretical simulations of the logic gate output characteristics are in excellent agreement with experiment.
Related Concept Videos
Quantum Numbers
Network Function of a Circuit
Semiconductors
Metals such as copper (Cu), zinc (Zn), or lead (Pb) have low resistivity and feature conduction bands that are either not fully occupied or overlap with the valence band, making a bandgap non-existent. This allows electrons in the highest energy levels of the valence band to easily transition to the conduction band upon gaining...
Field Effect Transistor
MOS Capacitor
The metal gate is typically made from highly conductive materials such as aluminum or polysilicon. Beneath the metal gate lies a thin layer of...
Elements of Block Diagrams
A block diagram typically includes essential elements such as comparators, blocks, and feedback loops. Each of these elements...

