Qubits versus bits for measuring an integral of a classical field

Lev Vaidman, Zion Mitrani

Research output: Contribution to journalArticlepeer-review

Abstract

Various methods for measuring an integral of a classical field via local interaction of classical bits or qubits passing through the field one at a time were analyzed. A quantum method, which has an exponentially better precision than any classical method was also described. An interaction that leads to a qubit 'rotation' proportional to the strength of the field was arranged in the quantum method. It was observed that the strengths depends only on the number of the qubit passing through the field and were fixed before the experiment.

Original languageEnglish
Article number217902
Pages (from-to)217902-1-217902-4
JournalPhysical Review Letters
Volume92
Issue number21
DOIs
StatePublished - 28 May 2004

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