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Precision measurement

Relativity tested with a split electron

Splitting and recombining an electron wave packet has been used to test relativity at a record sensitivity. The result heralds an era of precision measurements of relativity using quantum-information methods. See Letter p.592

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Correspondence to V. Alan Kostelecký.

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Reporter Lizzie Gibney talks to researcher Thaned Pruttivarasin to find out how he revamped an old relativity experiment

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Kostelecký, V. Relativity tested with a split electron. Nature 517, 559–560 (2015).

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