title: Ultrafast coherent excitation of a trapped ion qubit for fast gates and photon frequency qubits.
abstract: We demonstrate ultrafast coherent excitation of an atomic qubit stored in the hyperfine levels of a single trapped cadmium ion. Such ultrafast excitation is crucial for entangling networks of remotely located trapped ions through the interference of photon frequency qubits, and is also a key component for realizing ultrafast quantum gates between Coulomb-coupled ions.
authors.affiliation: FOCUS Center and Department of Physics, University of Michigan, Ann Arbor, Michigan 48109-1040, USA. madsenm@wabash.edu
authors.forename: M J
authors.initials: MJ
authors.lastname: Madsen
authors.forename: D L
authors.initials: DL
authors.lastname: Moehring
authors.forename: P
authors.initials: P
authors.lastname: Maunz
authors.forename: R N
authors.initials: RN
authors.lastname: Kohn
authors.forename: L-M
authors.initials: LM
authors.lastname: Duan
authors.forename: C
authors.initials: C
authors.lastname: Monroe