Northwestern Events Calendar

Nov
20
2015

David Pappas: Materials issues for Quantum Computing

When: Friday, November 20, 2015
4:00 PM - 5:00 PM CT

Where: Technological Institute, L211, 2145 Sheridan Road, Evanston, IL 60208 map it

Audience: Faculty/Staff - Student - Public

Contact: Pamela Villalovoz   13645

Group: Physics and Astronomy Colloquia

Category: Academic

Description:

Title: Materials issues for Quantum Computing

Speaker: David Pappas, (NIST)

Abstract:

An introductory review of quantum information will be given that illustrates applications of quantum systems for computing. Two very different physical systems, ion and superconducting Josephson junction qubits, will be given where we have studied the relevant properties that need to be optimized. In particular, for the ion traps we observe that UHV cleaning and surface order helps reduce the ion heating rates that are deleterious to the operation of qubit gates. For superconducting qubits we find that it is more important to optimize the interface between the superconductor and the substrate to improve the quantum coherence times.

 

C.V.:David Pappas is the leader of the Quantum Processing Group in the Quantum Electromagnetism Division at the National Institute of Standards in Boulder Colorado. He received his Ph.D. in Physics at the University of California, Irvine, in 1990. While at UCI, he worked in the area of Surface Science, studying metastable phases of elements and correlated the physical, electrical, magnetic properties. At UCI he was an IBM Graduate Research Fellowship. He went on to do post-doctoral work at IBM Almaden Research Center and the Naval Research Laboratory as an Office of Naval Technology Research Fellow. David then moved to an Assistant Professor position at Virginia Commonwealth University, where he was awarded a National Science Foundation Young Investigator grant. He has published over 100 papers, including seminal work in the area of magnetic spin reorientations in thin films, spin dependent transport of hot electrons, stabilization of metastable phases of Fe on Cu and diamond, in-situ SQUID magnetometry,  and magnetic circular dichroism.  In 1996, David moved to NIST and has been focusing on development and applications of magneto-resistive technology and new systems for quantum computing.

Host: Anupam Garg & Jens Koch

Speaker Schedule

Keywords: Physics, Astronomy, colloquium

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