title: A compact orbital angular momentum spectrometer using quantum Zeno interrogation.
abstract: We present a scheme to measure the orbital angular momentum spectrum of light using a precisely timed optical loop and quantum non-demolition measurements. We also discuss the influence of imperfect optical components.
authors.affiliation: Department of Physics, University of Michigan, Ann Arbor, Michigan, USA.
authors.forename: Paul
authors.initials: P
authors.lastname: Bierdz
authors.forename: Hui
authors.initials: H
authors.lastname: Deng