title: Pump-probe spectroscopy of two-body correlations in ultracold gases.
abstract: We suggest pump-probe spectroscopy to study pair correlations that determine the many-body dynamics in weakly interacting, dilute ultracold gases. A suitably chosen, short laser pulse depletes the pair density locally, creating a "hole" in the electronic ground state. The dynamics of this nonstationary pair density is monitored by a time-delayed probe pulse. The resulting transient signal allows us to spectrally decompose the hole and to map out the pair correlation function.
authors.affiliation: Institut für Theoretische Physik, Freie Universität Berlin, Arnimallee 14, 14195 Berlin, Germany. ckoch@physik.fu-berlin.de
authors.forename: Christiane P
authors.initials: CP
authors.lastname: Koch
authors.forename: Ronnie
authors.initials: R
authors.lastname: Kosloff