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After 25 Years, Physicists Can Finally Measure The 'Other' Kind of Quantum Entanglement
Quantum entanglement is one of the most cognitively jarring disconnects between the quantum domain and the macroscopic world. When fundamental particles such as electrons or photons are entangled, they share a quantum identity and cannot be described as individual entities; they exist in a superposition with no fixed state until at least one is measured. This transcends physical distance, so a quantum-entangled coin flip on Earth would produce an instantaneous and commensurate result on Mars. Of course, these results are random and transmit no information, squashing hopes for faster-than-light communication or an intricate terrestrial-Martian coin-flip cheating ring. The elementary particles of the Standard Model, which describe our current-best understanding of the Universe's fundamental particles and forces, except gravity.
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