title: Dual-species matter qubit entangled with light.
abstract: We propose and demonstrate an atomic qubit based on a cold 85Rb-87Rb isotopic mixture, entangled with a frequency-encoded optical qubit. The interface of an atomic qubit with a single spatial light mode, and the ability to independently address the two atomic qubit states, should provide the basic interferometrically robust element of a quantum network.
authors.affiliation: School of Physics, Georgia Institute of Technology, Atlanta, Georgia 30332-0430, USA.
authors.forename: S-Y
authors.initials: SY
authors.lastname: Lan
authors.forename: S D
authors.initials: SD
authors.lastname: Jenkins
authors.forename: T
authors.initials: T
authors.lastname: Chanelière
authors.forename: D N
authors.initials: DN
authors.lastname: Matsukevich
authors.forename: C J
authors.initials: CJ
authors.lastname: Campbell
authors.forename: R
authors.initials: R
authors.lastname: Zhao
authors.forename: T A B
authors.initials: TA
authors.lastname: Kennedy
authors.forename: A
authors.initials: A
authors.lastname: Kuzmich