title: Simple manipulation of a microwave dressed-state ion qubit.
abstract: Many schemes for implementing quantum information processing require that the atomic states used have a nonzero magnetic moment; however, such magnetically sensitive states of an atom are vulnerable to decoherence due to fluctuating magnetic fields. Dressing an atom with external fields is a powerful method of reducing such decoherence [N. Timoney et al., Nature (London) 476, 185 (2011)]. We introduce an experimentally simpler method of manipulating such a dressed-state qubit, which allows the implementation of general rotations of the qubit, and demonstrate this method using a trapped ytterbium ion.
authors.affiliation: Department of Physics and Astronomy, University of Sussex, Brighton BN1 9QH, United Kingdom.
authors.forename: S C
authors.initials: SC
authors.lastname: Webster
authors.forename: S
authors.initials: S
authors.lastname: Weidt
authors.forename: K
authors.initials: K
authors.lastname: Lake
authors.forename: J J
authors.initials: JJ
authors.lastname: McLoughlin
authors.forename: W K
authors.initials: WK
authors.lastname: Hensinger