title: Quantum phase retrieval of a Rydberg wave packet using a half-cycle pulse.
abstract: A terahertz half-cycle pulse was used to retrieve information stored as quantum phase in an N-state Rydberg atom data register. The register was prepared as a wave packet with one state phase reversed from the others (the "marked bit"). A half-cycle pulse then drove a significant portion of the electron probability into the flipped state via multimode interference.
authors.affiliation: Physics Department, University of Michigan, Ann Arbor, Michigan 48109-1120, USA.
authors.forename: J
authors.initials: J
authors.lastname: Ahn
authors.forename: D N
authors.initials: DN
authors.lastname: Hutchinson
authors.forename: C
authors.initials: C
authors.lastname: Rangan
authors.forename: P H
authors.initials: PH
authors.lastname: Bucksbaum