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Russian Microelectronics

Tight-Binding Approximation for a Double-Quantum-Dot Charge Qubit in an Optically Controlled Photonic Molecular Structure

A. V. Tsukanov, И. Ю. Катеев

Published Feb 1, 2026• 0 citations
Publisher

Abstract

Abstract This paper considers the transition from the coordinate representation of the Hamiltonian of a charge qubit in a single-electron double quantum dot to the projection representation in the tight-binding approximation. It is shown that this representation allows one to identify the parameters (energy levels, transition frequencies, and Rabi frequencies) obtained by numerically solving the stationary Schrödinger equation for a specific quantum dot. Similarly, solutions of Maxwell’s equations for the photonic molecule controlling the qubit state are used to obtain its Hamiltonian in the tight-binding approximation.

DOI
10.1134/s1063739726600093

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