Solid State in a Cloud of Atoms

Tin-Lun Ho

Frédéric Chevy

The fermionic analog of a solid-state polaron (an electron surrounded by a cloud of phonons) has been created by dropping a spin-down atom into a Fermi sea of spin-up ultracold atoms.

Frédéric Chevy

The fermionic analog of a solid-state polaron (an electron surrounded by a cloud of phonons) has been created by dropping a spin-down atom into a Fermi sea of spin-up ultracold atoms.

Anonymous

Michael Schirber

Calculations reveal that a dense cloud of cold atoms pumped with lasers can glow with its own laser light. Such ‘random lasers’ have previously been made only from solid and liquid materials.