# 3R-WS2 crystals as a breakthrough in compact entangled photon sources

**Authors:** Xinyu Yang, Mengxi Tan, David J. Moss

PMC · DOI: 10.1038/s41377-024-01688-8 · Light, Science & Applications · 2025-02-27

## TL;DR

A new material, 3R-WS2, enables a compact source for entangled photons, advancing quantum technologies.

## Contribution

The first high-performance, ultracompact polarization-entangled photon-pair source using 3R-WS2 crystals.

## Key findings

- 3R-WS2 crystals produce high-quality polarization-entangled photon pairs.
- The source is ultracompact and based on van der Waals materials.
- This development supports integrated quantum computing and communication systems.

## Abstract

In a breakthrough that promises to revolutionize quantum photonic systems, researchers have successfully demonstrated a high-performance, ultracompact polarization-entangled photon-pair source using the van der Waals-based two-dimensional 3R-WS2 crystal. This achievement opens new avenues for integrated quantum technologies, paving the way for advanced applications in quantum computing, communication, and metrology.

## Full-text entities

- **Chemicals:** 3R (-), tungsten disulfide (MESH:C000711329), MoS2 (MESH:C082964)
- **Cell lines:** 3R-WS2 — Homo sapiens (Human), Werner syndrome, Finite cell line (CVCL_A7PL)

## Full text

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## Figures

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## References

1 references — full list in the complete paper: https://tomesphere.com/paper/PMC11868606/full.md

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Source: https://tomesphere.com/paper/PMC11868606