The magic of photons: How light could link quantum computers

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What’s the deal? IBM researchers and collaborators have built an ultrafast, ultra-efficient all-optical switch that takes only a few photons to switch.

The photon is the quantum of electromagnetic radiation. In other words, the light we see is made up of these individual teeny tiny particles, photons.

The new device could greatly speed up computers - it’s hundreds of times faster than the fastest commercial transistors available today. And it consumes very little energy, too. So… Your future gadgets could be much faster and your battery would last much longer!

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