title: Ultrafast optics. Ultrafast optical control by few photons in engineered fiber.
abstract: Fast control of a strong optical beam by a few photons is an outstanding challenge that limits the performance of quantum sensors and optical processing devices. We report that a fast and efficient optical gate can be realized in an optical fiber that has been engineered with molecular-scale accuracy. Highly efficient, distributed phase-matched photon-photon interaction was achieved in the fiber with locally controlled, nanometer-scale core variations. A three-photon input was used to manipulate a Watt-scale beam at a speed exceeding 500 gigahertz. In addition to very fast beam control, the results provide a path to developing a new class of sensitive receivers capable of operating at very high rates.
authors: Department of Electrical and Computer Engineering, University of California, San Diego, La Jolla, CA 92093, USA.
authors: R
authors: R
authors: Nissim
authors: Department of Electrical and Computer Engineering, University of California, San Diego, La Jolla, CA 92093, USA.
authors: A
authors: A
authors: Pejkic
authors: Department of Electrical and Computer Engineering, University of California, San Diego, La Jolla, CA 92093, USA.
authors: E
authors: E
authors: Myslivets
authors: Department of Electrical and Computer Engineering, University of California, San Diego, La Jolla, CA 92093, USA.
authors: B P
authors: BP
authors: Kuo
authors: Department of Electrical and Computer Engineering, University of California, San Diego, La Jolla, CA 92093, USA.
authors: N
authors: N
authors: Alic
authors: Department of Electrical and Computer Engineering, University of California, San Diego, La Jolla, CA 92093, USA. sradic@ucsd.edu.
authors: S
authors: S
authors: Radic