Low-Dimensional Solid-State Single-Photon Emitters

TL;DR

This review discusses recent advances in low-dimensional solid-state single-photon emitters, highlighting their properties, techniques for enhancement, and future challenges for quantum technology applications.

Contribution

It provides a comprehensive overview of recent progress in LDSPEs across various low-dimensional materials, emphasizing their unique advantages and potential for quantum technologies.

Findings

High photon extraction efficiency in LD-SPEs

Deterministic control over quantum light emission

Enhanced photon properties through spectral tuning and cavity coupling

Abstract

Solid-state single-photon emitters (SPEs) are attracting significant attention as fundamental components in quantum computing, communication, and sensing. Low-dimensional materials-based SPEs (LD-SPEs) have drawn particular interest due to their high photon extraction efficiency, ease of integration with photonic circuits, and strong coupling with external fields. The accessible surfaces of LD materials allow for deterministic control over quantum light emission, while enhanced quantum confinement and light-matter interactions improve photon emissive properties. This review examines recent progress in LDSPEs across four key materials: zero-dimensional (0D) semiconductor quantum dots, one-dimensional (1D) nanotubes, two-dimensional (2D) materials, including hexagonal boron nitride (hBN) and transition metal dichalcogenides (TMDCs). We explore their structural and photophysical properties, along with techniques such as spectral tuning and cavity coupling that enhance SPE performance. Finally, we address future challenges and suggest strategies for optimizing LD-SPEs for practical quantum applications.