Next Article in Journal / Special Issue
Clock Topologies for Molecular Quantum-Dot Cellular Automata
Previous Article in Journal
An Improved Proposed Single Phase Transformerless Inverter with Leakage Current Elimination and Reactive Power Capability for PV Systems Application
Previous Article in Special Issue
Effectiveness of Molecules for Quantum Cellular Automata as Computing Devices
Article Menu

Export Article

Open AccessArticle
J. Low Power Electron. Appl. 2018, 8(3), 30;

Exponentially Adiabatic Switching in Quantum-Dot Cellular Automata

Department of Electrical Engineering, University of Notre Dame, Notre Dame, IN 46556, USA
Author to whom correspondence should be addressed.
Received: 15 August 2018 / Revised: 5 September 2018 / Accepted: 5 September 2018 / Published: 7 September 2018
(This article belongs to the Special Issue Quantum-Dot Cellular Automata (QCA) and Low Power Application)
Full-Text   |   PDF [1021 KB, uploaded 7 September 2018]   |  


We calculate the excess energy transferred into two-dot and three-dot quantum dot cellular automata systems during switching events. This is the energy that must eventually be dissipated as heat. The adiabaticity of a switching event is quantified using the adiabaticity parameter of Landau and Zener. For the logically reversible operations of WRITE or ERASE WITH COPY, the excess energy transferred to the system decreases exponentially with increasing adiabaticity. For the logically irreversible operation of ERASE WITHOUT COPY, considerable energy is transferred and so must be dissipated, in accordance with the Landauer Principle. The exponential decrease in energy dissipation with adiabaticity (e.g., switching time) distinguishes adiabatic quantum switching from the usual linear improvement in classical systems. View Full-Text
Keywords: Landauer; Landau-Zener; quantum-dot; switching; adiabatic; erasure Landauer; Landau-Zener; quantum-dot; switching; adiabatic; erasure

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

Share & Cite This Article

MDPI and ACS Style

Pidaparthi, S.S.; Lent, C.S. Exponentially Adiabatic Switching in Quantum-Dot Cellular Automata. J. Low Power Electron. Appl. 2018, 8, 30.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Metrics

Article Access Statistics



[Return to top]
J. Low Power Electron. Appl. EISSN 2079-9268 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top