title: Atomic memory for correlated photon states.
abstract: We experimentally demonstrate emission of two quantum-mechanically correlated light pulses with a time delay that is coherently controlled via temporal storage of photonic states in an ensemble of rubidium atoms. The experiment is based on Raman scattering, which produces correlated pairs of spin-flipped atoms and photons, followed by coherent conversion of the atomic states into a different photon beam after a controllable delay. This resonant nonlinear optical process is a promising technique for potential applications in quantum communication.
authors.affiliation: Department of Physics, Harvard University, Cambridge, MA 02138, USA.
authors.forename: C H
authors.initials: CH
authors.lastname: van der Wal
authors.forename: M D
authors.initials: MD
authors.lastname: Eisaman
authors.forename: A
authors.initials: A
authors.lastname: André
authors.forename: R L
authors.initials: RL
authors.lastname: Walsworth
authors.forename: D F
authors.initials: DF
authors.lastname: Phillips
authors.forename: A S
authors.initials: AS
authors.lastname: Zibrov
authors.forename: M D
authors.initials: MD
authors.lastname: Lukin
mesh_terms: D007834:Lasers; D017785:Photons; D011789:Quantum Theory; D012413:Rubidium; D012542:Scattering, Radiation; D013059:Spectrum Analysis, Raman; D013113:Spin Labels; D013997:Time Factors
chemical_list: D013113:Spin Labels; D012413:Rubidium