title: Generation of spin squeezing via continuous quantum nondemolition measurement
abstract: Continuous quantum nondemolition monitoring of a collective atomic spin with an off-resonant laser beam has been performed. Squeezed atomic spin states have thereby been produced with spin noise reduction to 70% below the standard quantum limit expected for a coherent spin state.
authors.affiliation: Department of Physics and Astronomy, University of Rochester, Rochester, New York 14627, USA.
authors.initials: A
authors.lastname: Kuzmich
authors.initials: L
authors.lastname: Mandel
authors.initials: NP
authors.lastname: Bigelow