title: Qubits versus bits for measuring an integral of a classical field.
abstract: Methods for measuring an integral of a classical field via local interaction of classical bits or local interaction of qubits passing through the field one at a time are analyzed. A quantum method, which has an exponentially better precision than any classical method we could see, is described.
authors.affiliation: School of Physics and Astronomy, Raymond and Beverly Sackler Faculty of Exact Sciences, Tel-Aviv University, Tel-Aviv 69978, Israel.
authors.forename: Lev
authors.initials: L
authors.lastname: Vaidman
authors.forename: Zion
authors.initials: Z
authors.lastname: Mitrani