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Optical computing or photonic computing uses light waves produced by lasers or incoherent sources for data processing, data storage or data communication for computing.For decades, photons have shown promise to enable a higher bandwidth than the electrons used in conventional computers (see optical fibers).
Jiuzhang (Chinese: 九章) is the first photonic quantum computer to claim quantum supremacy.Previously quantum supremacy has been achieved only once in 2019 by Google's Sycamore, however Google's computer was based on superconducting materials, and not photons.
5D optical data storage (also branded as Superman memory crystal, [1] a reference to the Kryptonian memory crystals from the Superman franchise) is an experimental nanostructured glass for permanently recording digital data using a femtosecond laser writing process. [2]
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An older example of optical storage that does not require the use of computers, is microform. There are other means of optically storing data and new methods are in development. An optical disc drive is a device in a computer that can read CD-ROMs or other optical discs, such as DVDs and Blu-ray discs.
Many expect that quantum dot display technology can compete or even replace liquid crystal displays (LCDs) in near future, including the desktop and notebook computer spaces and televisions. These initial applications alone represent more than a $8-billion addressable market by 2023 for quantum dot-based components.
A number of release dates were announced, all since passed, [6] likely due to actual high costs of the drives and discs itself, lack of compatibility with existing or new standards, and competition from more established optical disc Blu-ray and video streaming.
Release date Quantum volume Alpine Quantum Technologies PINE System [2] Trapped ion: 24 [3] June 7, 2021: 128 [4] Atom Computing Phoenix Neutral atoms in optical lattices: 100 [5] August 10, 2021: Atom Computing N/A Neutral atoms in optical lattices: 35×35 lattice (with 45 vacancies) < 99.5 (2 qubits) [6] 1180 [7] [8] October 2023 Google: N/A ...