Special Lecture: Michael G. Raymer

    Thursday, December 6, 2018 - 3:30pm - 4:30pm
    Franken Conference Room (Meinel 821)

    1630 E. University Blvd.

    Tucson, AZ 85721


    Title: “High-Efficiency Multiplexing of Quantum Information in Optical Temporal Modes


    Information can be encoded in single photons using temporal modes (i.e., sets of field-orthogonal wave-packet shapes). Temporal modes span a high-dimensional quantum state space and lend themselves to integration into existing single-mode fiber communication networks including quantum repeaters, thus creating a new framework for quantum information science. A challenge to achieving full control of temporal-mode states is their multiplexing and demultiplexing with zero crosstalk. Such add/drop functionality can be achieved by frequency conversion (FC) via nonlinear wave mixing, which can exchange the quantum states between two narrow spectral bands in a temporal-mode-selective manner. By tailoring the shape of the pump laser pulse and the phase-matching conditions of a second-order nonlinear optical medium, one can achieve good selectivity for different temporally orthogonal wave packets at efficiencies no higher than about 80%, limited by the fundamental nature of FC. To exceed the above-mentioned limit, we demonstrate a two-stage “Ramsey” interferometric pulsed FC scheme, which is predicted to reach near-100% selectivity. Using the two-stage scheme, we demonstrate a large increase over the single-stage selectivity limit, for the first three natural (“Schmidt”) modes of the FC process. 

    Speaker Bio(s): 

    Michael G. Raymer  received his PhD from the University of Colorado in 1979. After a tenure on the faculty at the Institute of Optics, University of Rochester, he moved to the University of Oregon in 1988, where he later served as founding Director of the Oregon Center for Optics, now the Center for Optical Molecular and Quantum Science. His research focuses on the quantum mechanics of light and its interaction with atoms and molecules, with applications in nonlinear optics, quantum communications technology, and quantum information. In 1993, his group reported the first instance of experimental quantum-state tomography of light. He has held visiting appointments in Colorado, Germany, and Norway.

    He is a Fellow of the American Physical Society and of the Optical Society of America. He served on the Board of Directors of the  Optical Society of America and as Divisional Associate Editor for Physical Review Letters. He has served on the Committee on AMO Science, National Research Council, and on the Executive Committee of the Division of Laser Science, APS. He was a recipient of the University’s 2015 Outstanding Career Award.

    He developed a new university course and textbook for nonscience students called The Physics Behind the Internet that covers the physical basis for information technology, at a level suitable for students with little or no physics background. The course teaches, at a conceptual level, the basics of information, communication, atomic physics, semiconductor device physics, and optical physics and technology. In support of this course, he authored a textbook, The Silicon Web: Physics for the Internet Age. The book was published by Taylor and Francis in 2009.


    Refreshments at 3:15pm

    Lecture at 3:30pm