Long time back, I had read a news article on how holograms could be used for storing data if that could be possible.
How Stuff Works claims that Holographic memory offers the possibility of storing 1 terabyte (TB) of data in a sugar-cube-sized crystal.
Wiki-ed it…
Holographic data storage is a potential replacement technology in the area of high-capacity data storage currently dominated by magnetic and conventional optical data storage. Magnetic and optical data storage devices rely on individual bits being stored as distinct magnetic or optical changes on the surface of the recording medium. Holographic data storage overcomes this limitation by recording information throughout the volume of the medium and is capable of recording multiple images in the same area utilizing light at different angles.
Additionally, whereas magnetic and optical data storage records information a bit at a time in a linear fashion, holographic storage is capable of recording and reading millions of bits in parallel, enabling data transfer rates greater than those attained by optical storage.
How Stuff Works says that
In a holographic memory device, a laser beam is split in two, and the two resulting beams interact in a crystal medium to store a holographic recreation of a page of data. The stored data is read through the reproduction of the same reference beam used to create the hologram.
Mast hai naa!!!
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