the various current difficulties with creating photon based computers

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the various current difficulties with creating photon based computers

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Photons are pretty much unstorable. Researchers were able to “stop” a photon very briefly, but that’s using super high tech lab equipment, and even then, it was only for fractions of a second. It would be unfeasably hard to get a pure photon computer to work on the timescales of a human, especially when we have transistor based computation available.

You could absorb the photon into an excited electron state, moving a magnetic bit, but that’s just what we do now in the first place.

There are several issues we are working on but we are far from a prototype. In order to make a computer it must be able to compute things. That means logic gates which can follow the basic logic required for computations. We can do this with switch relays, amplifier valves or transistors. But when the inputs and outputs are light we need something new. There are a number of proposed solutions. But they are all expensive, large, slow, and hard to manufacture.