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Steven Chu
(born 1948) is an American physicist and former government official. Born in
St Louis
into a family with Chinese ancestry, Chu studied at the
University of Rochester
and then earned a PhD in physics at the
University of California, Berkeley
. He became a researcher, first at
Bell Labs
and then later as a professor at
Stanford University
. In 1997 he was awarded the
Nobel Prize in Physics
, along with two colleagues, for the "development of methods to
cool and trap atoms with laser light
". In 2009, Chu was appointed
United States Secretary of Energy
in the first administration of president
Barack Obama
, a position he held until 2013.
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