World's Largest Quantum Bell Test Spans Three Swiss Towns

Monday, June 16, 2008 - 09:35 in Physics & Chemistry

In an attempt to rule out any kind of communication between entangled particles, physicists from the University of Geneva have sent two entangled photons traveling to different towns located 18 km apart - the longest distance for this type of quantum measurement. The distance enabled the physicists to completely finish performing their quantum measurements at each detector before any information could have time to travel between the two towns.

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