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Nature 426, 610-611 (11 December 2003) | doi:10.1038/426610a

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Quantum optics: Light at a standstill

Marlan O. Scully1

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Nothing travels faster than light, but how slow can light go? Pulses of light have already been slowed to speeds of just a few metres per second, but now they have been brought to a complete halt.

Frozen light is a reality. As they report on page 638 of this issue, Bajcsy and colleagues1 have trapped, and held, a pulse of light for a few hundredths of a millisecond, which is a long time in optical terms.

  1. Princeton University, Princeton, New Jersey 08544-1009, and at Texas A&M University, College Station, Texas 77843-4242, USA.
    Email: mscully@princeton.edu