title: Spin-1/2 geometric phase driven by decohering quantum fields.
abstract: We calculate the geometric phase of a spin-1/2 system driven by one and two mode quantum fields subject to decoherence. Using the quantum jump approach, we show that the corrections to the phase in the no-jump trajectory are different when considering adiabatic and nonadiabatic evolutions. We discuss the implications of our results from both fundamental as well as quantum computational perspectives.
authors.affiliation: Optics Section, The Blackett Laboratory, Imperial College, London SW7 2BZ, United Kingdom.
authors.forename: A
authors.initials: A
authors.lastname: Carollo
authors.forename: I
authors.initials: I
authors.lastname: Fuentes-Guridi
authors.forename: M França
authors.initials: MF
authors.lastname: Santos
authors.forename: V
authors.initials: V
authors.lastname: Vedral