Holograms are an exciting concept but they are also a practical tool that can be used to image objects in three dimensions. But they have a couple of shortcomings, one being that they often require a high-intensity laser in order to produce a good image. Additionally, they require the object to be reflective such that enough light is scattered onto the holographic film. In an attempt to overcome some of these shortcomings, scientists have just managed to make a quantum hologram [1,2]. They achieved this by creating a pair of entangled photons, where one photon interacts with the object, while the other is directed onto the holographic film. The information about the object is then transferred to the other photon through the entanglement, meaning that the image can be created by photons that never directly interact with the object. This has some interesting applications for having low-energy photons for interacting with the object and high-energy photons for producing the holographic image.

This is the very first demonstration of this technique. Quantum holograms may become a fundamental research tool or they might be just an interesting demonstration of quantum mechanics. There is a lot we don't know yet, for instance, the resolution may be quite limited. It will be exciting to see what follow-up research is published in the coming years.

Journal articles
[1] [ Ссылка ]

Popular science articles
[2] [ Ссылка ]

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