Abstract: Exchange interaction in Si double quantum dots, which have been suggested as appropriate candidates for spin qubits because of their long spin coherence durations, is investigated here. Using three distinct models of the double quantum dot (DQDs) potential as a function the inter-dot distance (d) and of the electric field (E), inside the Heitler-London (HL) and Hund-Mulliken (HM) approximations, we derive the J-interaction. In a connected double quantum dot (DQD), we evaluate the J-interaction between triplet and singlet states using COMSOL Multiphysics wave functions. Considering several potentials, this computation is carried out inside a specified area of interest. We compare these results with a case in which the 1D Schrödinger problem has precisely known solutions. Keywords: Double quantum dots; Exchange interaction; Quantum computing. Title: Exchange Energy in Asymmetric Double Quantum Dots Author: Emad S. Taiyh, Sabah M. M. Ameen International Journal of Novel Research in Physics Chemistry & Mathematics ISSN 2394-9651 Vol. 11, Issue 2, May 2024 - August 2024 Page No: 59-71 Novelty Journals Website: www.noveltyjournals.com Published Date: 12-August-2024 DOI: https://doi.org/10.5281/zenodo.13304928 Paper Download Link (Source) https://www.noveltyjournals.com/upload/paper/Exchange%20Energy%20in%20Asymmetric-13082024-7.pdf