Switching of a Single Photon by Two {\Lambda}-type Three-Level Quantum Dots Embedded in Cavities Coupling to One-Dimensional Waveguide

TL;DR

This paper theoretically investigates how a single photon can be switched on or off using two b1b1-type three-level quantum dots in cavities coupled to a waveguide, with potential applications in quantum information processing.

Contribution

It introduces a method to control single-photon transmission via tuning classical fields and system parameters in a quantum dot-cavity-waveguide setup.

Findings

Single-photon switching achieved by tuning classical driving fields.

Control of photon transmission through QD-cavity coupling parameters.

Potential applications in quantum device design.

Abstract

Switching of a single photon interacting with two {\Lambda}-type three-level quantum dots embedded in cavities coupled to one-dimensional waveguide is investigated theoretically via the real-space approach. We demonstrated that switching of a single photon can be achieved by tuning the classic driving field on or off, and by controlling the QD-cavity coupling strength, Rabi frequency and the cavity-waveguide coupling rate. The transmission properties of a single photon by such a nanosystem discussed here could find the applications in the design of next-generation quantum devices and quantum information.