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Quantum Physics

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illustration of Micius satellite

QUANTUM CONNECTION  Using the quantum-communications satellite Micius (illustrated), researchers successfully sent entangled photons to two cities in China. The result paves the way for a future worldwide quantum network.

double-slit experiment

DO THE WAVE  Quantum matter acts like both a particle and a wave, as demonstrated by the famous double-slit experiment (illustrated above). Electrons sent through a pair of slits interfere like waves, creating peaks and troughs. This wave nature of matter could be used to create a tractor beam that could reel in atoms or molecules, a new study proposes.

warping space

EINSTEIN ENDURES  According to Einstein’s general theory of relativity, massive objects warp space (illustrated above), producing gravitational attraction. Scientists don’t understand how general relativity interfaces with quantum mechanics, but a pillar of general relativity, the equivalence principle, has withstood a new quantum test.

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