Quantum Information Processing Using Excitonic States of Quantum Dots and an Optical Cavity Manipulated by Collinear Laser Fields

TL;DR

This paper proposes a method for implementing quantum gates using excitonic states in quantum dots within an optical cavity manipulated by collinear laser fields, supported by theoretical and numerical simulations.

Contribution

It introduces a novel approach to quantum gate implementation leveraging collinear laser fields in quantum dot systems, with detailed simulations demonstrating feasibility.

Findings

Two-qubit gate operation achievable with proper detuning and amplitude control.

Theoretical and numerical results confirm the viability of the proposed method.

Extension to many quantum dots is straightforward based on the two-dot model.

Abstract

In this paper we investigate an implementation of a quantum gate for quantum information processing in a system of quantum dots in an optical cavity manipulated by collinear laser fields. For simplicity we give theoretical and numerical results only for simulations of two quantum dots in a cavity interacting with two collinear fields. Extension to the system of many quantum dots in a cavity can be done in similar manner as the two dots system. It is shown that due to the collinear fields are used, a two qubit gate operation can be acheived by choosing properly detunings and amplitudes of the collinear fields.