Correlation dynamics after short-pulse photoassociation

Details Correlation dynamics after short-pulse photoassociation Correlation dynamics after short-pulse photoassociation

2009-04-15

arxiv.org/abs/0904.2408v3

Phys. Rev. A 81, 063426 (2010)

Physics

Atomic Physics

Scientific paper

10.1103/PhysRevA.81.063426

Two atoms in an ultracold gas are correlated at short inter-atomic distances due to threshold effects where the potential energy of their interaction dominates the kinetic energy. The correlations manifest themselves in a distinct nodal structure of the density matrix at short inter-atomic distances. Pump-probe spectroscopy has recently been suggested [Phys. Rev. Lett. 103, 260401 (2009)] to probe these pair correlations: A suitably chosen, short photoassociation laser pulse depletes the ground state pair density within the photoassociation window, creating a non-stationary wave packet in the electronic ground state. The dynamics of this non-stationary wave packet is monitored by time-delayed probe and ionization pulses. Here, we discuss how the choice of the pulse parameters affects experimental feasibility of this pump-probe spectroscopy of two-body correlations.

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