title: Two-photon diffraction and quantum lithography.
abstract: We report a proof-of-principle experimental demonstration of quantum lithography. Utilizing the entangled nature of a two-photon state, the experimental results have beaten the classical diffraction limit by a factor of 2. This is a quantum mechanical two-photon phenomenon but not a violation of the uncertainty principle.
authors.affiliation: Department of Physics, University of Maryland, Baltimore County, Baltimore, Maryland 21250, USA.
authors.forename: M
authors.initials: M
authors.lastname: D'Angelo
authors.forename: M V
authors.initials: MV
authors.lastname: Chekhova
authors.forename: Y
authors.initials: Y
authors.lastname: Shih