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Nature 430, 624-625 (5 August 2004) | doi:10.1038/430624a; Published online 4 August 2004

Ultrafast physics:  Quantum control with a twist

Yaron Silberberg1

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Laser pulses can be generated such that their shape and state of polarization change on the scale of a few femtoseconds, adding a new twist to the control and manipulation of molecules.

When driving a car, steering is crucial for getting where you want to go. Imagine driving a car with no steering-wheel in Manhattan: you could go to some places, along north–south avenues or east–west streets, but you would be very limited in your choice of destination.

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