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Quantum Physics

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quantum computer

SILICON STEPS UP  Scientists are performing new quantum feats with silicon-based devices (background, shown in a scanning electron microscope image). In a technique that could help silicon quantum computers scale up, a particle of light (pink waves) was made to interact with the spin of a single electron (pink circle).

satellite beaming light down to telescope in China

SPACING OUT  Quantum communication through space is possible thanks to a Chinese satellite that beams particles of light down to telescopes like this one in Xinglong, China (shown here tracking the satellite’s location with a laser).

TURN BACK TIME  In a quantum experiment, scientists reversed the arrow of time, the idea that natural processes run in one direction in time.

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