Weve seen seen single-pixel cameras, and now MIT researchers have figured out how to create clear images of dimly-lit objects using single photons — in 3D, no less. Their technique doesnt involve any fancy new hardware, either, as they worked with a standard photon detector that fired low-intensity visible laser light pulses at subjects. The magic happens from the algorithms they developed, which can pick out the variations in the time it takes for individual photons to bounce back.
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