Research into Bose–Einstein condensation has advanced at a rapid pace since this unique state of matter was first produced in 1995. Now the pace is set to quicken even further with the announcement by three groups of faster and simpler techniques for creating Bose condensates. Physicists at Tübingen University in Germany, and independently at the Ludwig Maximilans University in Munich and the Max Planck Institute for Quantum Optics in Garching, have formed rubidium condensates in miniaturized traps (amo.phy.gasou.edu/bec.html/popular.html). Meanwhile, a team at the Georgia Institute of Technology has demonstrated an all-optical technique for producing condensates (Phys. Rev. Lett. 2001 87 010404).
Cold atoms promise versatile atomic chipsUsing a microelectronic chip to hold a cloud of cold atoms hovering above it, physicists in Germany may have developed an "atomic chip" that might eventually shunt Bose-Einstein condensates around an atom chip -just as electrons are shunted around a conventional silicon chip.This tiny circuit creates and manipulates a peculiar state of matter called a Bose-Einstein condensate (p21).Previously these condensates were made using light or magnetic fields to cool and confine a gas of atoms.Electric currents travelling through wires in the atom chip create a confining magnetic field barely 1 mm wide.This field holds a cloud of 1600 rubidium atoms at a height of less than a tenth of 1 mm above the chip surface.Quantum mechanics dictates that atoms, being so small, have wavelike properties.Normally each wave bobs up and down independently.However, in a Bose-Einstein condensate all of the atomic waves are "coherent" -moving in step, in the same quantum state.Instead of behaving like a