title: Role of entanglement in two-photon imaging.
abstract: The use of entangled photons in an imaging system can exhibit effects that cannot be mimicked by any other two-photon source, whatever the strength of the correlations between the two photons. We consider a two-photon imaging system in which one photon is used to probe a remote (transmissive or scattering) object, while the other serves as a reference. We discuss the role of entanglement versus correlation in such a setting, and demonstrate that entanglement is a prerequisite for achieving distributed quantum imaging.
authors.affiliation: Quantum Imaging Laboratory, Department of Electrical & Computer Engineering, Boston University, 8 Saint Mary's Street, Boston, MA 02215-2421, USA.
authors.forename: A F
authors.initials: AF
authors.lastname: Abouraddy
authors.forename: B E
authors.initials: BE
authors.lastname: Saleh
authors.forename: A V
authors.initials: AV
authors.lastname: Sergienko
authors.forename: M C
authors.initials: MC
authors.lastname: Teich