Build the ultimate world clock with quantum cogs

• Autores: Jacob Aron
• Localización: New scientist, ISSN 0262-4079, Nº. 2974, 2014, pág. 11
• Idioma: inglés
• Texto completo no disponible (Saber más ...)
• Resumen

  • Timekeeping institutes around the world each have their own caesium clocks. They submit their time signal measurements to the International Bureau of Weights and Measures in Paris, France, which averages them and publishes a monthly newsletter that sets Coordinated Universal Time. Eric Kessler at Harvard University and his colleagues think that quantum entanglement could be the answer. When quantum objects such as atoms are entangled, measuring one has a direct and predictable effect on the other. Kessler's team evaluated existing clocks around the world and proposed a blueprint for a hypothetical network. The team calculates that their global quantum clock would be about 100 times more precise than any individual clock.