= Carl Wieman
{c}
{tag=Physicist}
{wiki}
= Carl E. Wieman
{c}
{synonym}
= C. E. Wieman
{c}
{synonym}
<Carl Wieman> and <Eric Allin Cornell> helped realize <Bose-Einstein condensation> in a dilute trapped <rubidium> gas. <Laser cooling> prepared a cold sample, and evaporative cooling preferentially removed energetic <chemical atoms> to reach quantum degeneracy.
The appearance of a narrow component in the expanded distribution distinguished the condensate from the surrounding thermal population. This made a many-particle quantum state experimentally visible through a controlled cooling sequence and an ordinary spatial image.<Observation of Bose-Einstein Condensation in a Dilute Atomic Vapor by M. H. Anderson and others>[1995 experiment: cooling sequence, transition and expanded density distributions]{ref}
\Image[https://commons.wikimedia.org/wiki/Special:Redirect/file/Carl_Wieman.jpg?width=260]
{title=Portrait of <Carl Wieman>}
{description=Tina Hager. Public domain (US federal government work). https://creativecommons.org/publicdomain/mark/1.0/[Source usage terms], via Wikimedia Commons.}
{source=https://commons.wikimedia.org/wiki/File:Carl_Wieman.jpg}
{width=260}
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