Advancements in Entangled Photon Pairs in 2D Van der Waals Materials for On-chip Quantum Applications
arXiv:2505.09944 · doi:10.1002/qute.202500551
Abstract
The next generation of technology is rooted in quantum-based advancements. The entangled photon pair sources play a pivotal role in such wide range of advancement in quantum-based applications, including quantum high precision sensors, communication, computing, cryptography and so on. Scalable on-chip quantum photonic devices hold the key potential to drive transformative advancements in the field. This review article highlights recent breakthroughs and advancements in the generation of entangled photon pairs (EPP) in two dimensional (2D) van der Waals (vdW) materials, with a focus on their applicability to quantum technologies and plausible on-chip quantum integrated photonic device technology. The article begins by discussing the fundamental principles of entangled photon pairs generation. It provides a comprehensive review of the origin and generation of entangled photons in emerging layered vdW materials, alongside various optical quantum characterization techniques. The review then explores key physical parameters of the quantum states associated with entangled photon pairs. Additionally, it examines concepts related to the realization of paired photon generation at the quantum limit. The final section focuses on the potential for on-chip integrated quantum device applications. Beyond highlighting recent advancements in quantum-based research, the review also outlines the current limitations and future prospects aimed at advancing the field.
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