Quantum Holograms Don’t Even Need to “See” Their Subject; technique could be used for indirect medical imaging and more

https://spectrum.ieee.org/quantum-holography-using-undetected-light

"nonlinear crystal to split a violet laser beam into two beams, one far-red, the other near-infrared... far-red beam to illuminate a sample—a glass plate engraved with symbols—whereas they used a camera to record the near-infrared light. With the help of entanglement, they could use data from the near-infrared light to reconstruct a hologram based off the details of the object the far-red beam scanned... could use, say, a midinfrared beam to scan an object while using the partner visible light beam"

Related:

Visualizing the inside of cells at previously impossible resolutions

https://phys.org/news/2023-01-visualizing-cells-previously-impossible-resolutions.html

Holographic hybridization technique allows changes of depth of field in recorded pictures and videos

https://phys.org/news/2023-09-holographic-hybridization-technique-depth-field.html

Liquid lens–based holographic camera captures real 3D scenes

https://techxplore.com/news/2024-03-liquid-lensbased-holographic-camera-captures.html