Light to entangle mirrors

Posted by Dale on Mar 13, 2002 at 10:57

Mancini and colleagues' scheme makes use of the fact that when photons of light hit a mirror, they impart some momentum to it. The pressure of this radiation can make the mirror move. An intense light beam, such as a laser, bouncing back and forth between two movable mirrors can set up a standing wave that makes them oscillate.

The team calculates that entanglement should persist even at temperatures of four degrees above absolute zero - warm for the quantum world, and easy to achieve. Entangling macroscopic objects such as mirrors may provide a way to detect extremely weak forces with high precision, says Mancini2. Such weak forces have been proposed, for example, that modify Newton's law of gravity.

Ya, but will the standing waves attract hydrogen?

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