Researchers built a tiny light source that can fire off individual light particles shaped into 3D holographic images.
March 25, 2026
Original Paper
Structured Single-photon Metasource
arXiv · 2603.23061
The Takeaway
Normally, holograms require complex lenses and a beam of light passing through a film. This new semiconductor chip shapes the light at the source, allowing a single photon to carry a high-resolution image, which could revolutionize how we transmit secure quantum information.
From the abstract
Structured quantum light is crucial for high-dimensional quantum information processing, yet its direct generation from quantum emitters remains challenging due to their intrinsic locality and omnidirectional radiation. Metasurfaces have been adopted for quantum-light wavefront shaping, typically in cascaded or stacked configurations that suffer from low efficiency and limited resolution. Here, we demonstrate a semiconductor metasource that directly embodies single quantum dots in a nonlocal GaA