Colloquium Spring 2000

All Department Seminars and Colloquium


January 10

The Glorious Days of Physics: Renormalization of Gauge Theories
Gerard 't Hooft, Nobel Prize in Physics, 1999
Institute for Theoretical Physics, Universiteit Utrecht

January 17

No Colloquium: Martin Luther King Day, University Holiday

January 24

From Gravity to Gauge Theories via Branes
Igor Klebanov
Dept. of Physics, Princeton University

January 31

Green Chemistry in China
Academician Qingshi Zhu
Dept. of Chemical Physics, and President, University of Science and Technology, China

February 7

Theory and Simulation of Solitary Wave Fields in the Auroral Ionosphere
Martin V. Goldman
Dept. of Physics, Univ. of Colorado, Boulder

February 14

X-ray Spectroscopy and Astrophysical Winds
Patrick Wojdowski
Lawrence Livermore National Laboratory

February 21

No Colloquium: Presidents' Day, University Holiday

February 28

Physics Beyond the Standard Models at Super-Kamiokande
Ken Ganezer
Dept. of Physics California State University, Dominguez Hills

March 6

Subcellular Targeting of Proteins in Neurons: A Biolistic Approach
Don Arnold
Department of Biological Sciences, USC

March 13

No Colloquium: Spring Recess, March 13-18

March 20

The Hubble Space Telescope Key Project to Measure the Hubble Constant
Wendy Freedman
Carnegie Observatories, Pasadena

March 27

Trapped Nonneutral Plasmas, Fluids, and Crystals
Dan Dubin
Dept. of Physics, Univ. of California, San Diego

April 3

Superstring Phenomenology and Cosmology
Michael Dine
Dept. of Physics, Univ. of California, Santa Cruz

April 10

X-ray Astronomy of Compact Objects: Galactic Neutron Stars and Black Holes
Bob Rutledge
Space Radiation Laboratory, California Institute of Technology

April 17

Battling Decoherence: The Fault-Tolerant Quantum Computer
John Preskill
Division of Physics, Mathematics, and Astronomy, California Institute of Technology


Information is something that can be encoded in the state of a physical system, and a computation is a task that can be performed with a physically realizable device. Therefore, since the physical world is fundamentally quantum mechanical, the foundations of information theory and computer science should be sought in quantum physics. In fact, quantum information has weird properties that contrast sharply with the familiar properties of classical information. A quantum computer -- a new type of machine that exploits the quantum properties of information -- could perform certain types of calculations far more efficiently than any foreseeable classical computer. To construct practical quantum computers will be tremendously challenging. A particularly daunting difficulty is that quantum computers are far more susceptible to making errors than conventional digital computers. I will explain the principles of fault-tolerant quantum computation, which can enable a properly designed quantum computer with imperfect components to achieve good reliability.

April 24

Internet 2
Carl Kesselman
Information Sciences Institute (Marina del Rey), USC

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