The introduction of entangled photons traveling in spiral, corkscrew-like paths has given rise to holograms capable of providing ultra-secure data encryption and increased data density. Light can travel in various patterns, such as the vertical and horizontal oscillations of polarized light. When light possesses orbital angular momentum, it can propagate in twisted spirals, resembling rotini pasta.
Twisted photons can be entangled in the same way as regular photons, causing them to function as a single entity. When one photon of an entangled pair is affected, the other experiences an immediate impact, regardless of the distance between them.
Researchers have previously conducted experiments transmitting data through entangled twisted photon pairs, which should enable high-speed data transmission. This is due to the varying degrees of twist that light can possess, with each twist functioning as a separate communication channel.
This method has now been applied to data recording in holograms. Instead of transmitting information through multiple twisted light channels, photon pairs with differing amounts of twist generate unique data sets within a single hologram. The greater the number of orbital angular momentum states, each with varying degrees of twist, the more data can be stored in a hologram.
Moreover, the incorporation of diverse twists for data recording enhances security. To access the stored information, one must determine or guess the twisted light pattern used during the recording process.
reference: ScienceNews
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