Scalable Method for Creating Stable Quantum Emitters in 2D Materials

A breakthrough in quantum technology has been achieved by researchers at Rice University, Oak Ridge National Laboratory, and the University of Technology, Sydney. They have demonstrated a scalable method for producing high-performance single-photon emitters (SPEs) in hexagonal boron nitride (h-BN), a two-dimensional (2D) material, at room temperature. These single-photon emitters, created by introducing carbon atoms during the film growth process, are highly pure, stable, and suitable for use in quantum computing and communication. The researchers used pulsed laser deposition (PLD) to synthesize the h-BN films, which produced defects intentionally incorporated into the material. These defects act as reliable SPEs, overcoming limitations in previous attempts at creating stable quantum emitters. The emitters demonstrate excellent brightness, polarization, and photostability, making them promising candidates for integration into photonic devices for quantum technologies. This work addresses critical challenges in the scalability and reliability of quantum emitters, opening the door to practical quantum communication and information processing technologies. By offering a more reproducible and efficient method for creating quantum bits (qubits), this research represents a significant step toward realizing scalable quantum systems.