title: Low-noise simultaneous fluorescence detection of two atomic states.
abstract: We demonstrate a new simultaneous normalized detection technique for fluorescence detection of ultracold atoms in a superposition of ground-state hyperfine levels. Using this technique we observe atom shot-noise limited detection signal-to-noise ratios in excess of 7800:1 per shot and 14400:1 in 1 s.
authors.affiliation: Department of Physics, Stanford University, Stanford, CA 94305, USA.
authors.forename: G W
authors.initials: GW
authors.lastname: Biedermann
authors.forename: X
authors.initials: X
authors.lastname: Wu
authors.forename: L
authors.initials: L
authors.lastname: Deslauriers
authors.forename: K
authors.initials: K
authors.lastname: Takase
authors.forename: M A
authors.initials: MA
authors.lastname: Kasevich