title: Delayed "Choice" quantum eraser
abstract: We report a delayed "choice" quantum eraser experiment of the type proposed by Scully and Druhl (where the "choice" is made randomly by a photon at a beam splitter). The experimental results demonstrate the possibility of delayed determination of particlelike or wavelike behavior via quantum entanglement. The which-path or both-path information of a quantum can be marked or erased by its entangled twin even after the registration of the quantum.
authors.affiliation: Department of Physics, University of Maryland, Baltimore County, Baltimore, Maryland 21250, USA.
authors.initials: YH
authors.lastname: Kim
authors.initials: R
authors.lastname: Yu
authors.initials: SP
authors.lastname: Kulik
authors.initials: Y
authors.lastname: Shih
authors.initials: MO
authors.lastname: Scully