Physicists Store, Retrieve a "Squeezed Vacuum"

An anonymous reader sends us to the site of Science Magazine for news that will interest those who have followed experiments to slow and stop light. Research groups in Canada and Japan have succeeded separately in storing a special kind of vacuum — a "squeezed vacuum" — in a puff of gas and then retrieving it a split second later. Such experiments might lead to advances in quantum encryption. At the very least they will help to illuminate the boundary between quantum and classical realms.

Comments

Re:Gas of Atoms

[pldd]

You can have gas made of molecules, a gas of photons, a gas of electrons, etc. As long as you have a large ensemble of free particles in a given volume you can call it a gas.