Single Photon Sources from 2D‐Materials and Interfacing with Waveguides for Quantum Technological Applications

Abstract Photonic quantum technological applications require single photon sources as sources of qubits. Two‐dimensional (2D) material platforms have emerged as deterministic, scalable, and on‐chip integrated sources of single photons. Generation and control of the sources remain challenging yet rewarding research problems. Interfacing the sources with waveguides is a significant task for integrated quantum technological applications such as quantum information processing, quantum cryptography, and quantum networking. In this work, a comprehensive review of the formation and control of single photon sources from 2D materials is presented. The creation and control of these quantum emitters working both at room and low temperatures are critically analyzed. The methodology of deterministic formation and position‐controlled single photon sources are elaborated and pictorially explained. Major single photon sources are compared from various 2D and other resources. In the end, the application of single photons in quantum technological applications such as quantum communications, quantum computation, and quantum sensing are discussed.