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reader.ad section 9/21/05 12:38 PM Page 2 AMAZING LIGHT: Visions for Discovery AN INTERNATIONAL SYMPOSIUM IN HONOR OF THE 90TH BIRTHDAY YEAR OF CHARLES TOWNES October 6-8, 2005 — University of California, Berkeley Amazing Light Symposium and Gala Celebration c/o Metanexus Institute 3624 Market Street, Suite 301, Philadelphia, PA 19104 215.789.2200, [email protected] www.foundationalquestions.net/townes Saturday, October 8, 2005 We explore. What path to explore is important, as well as what we notice along the path. And there are always unturned stones along even well-trod paths. Discovery awaits those who spot and take the trouble to turn the stones. -- Charles H. Townes Table of Contents Table of Contents.............................................................................................................. 3 Welcome Letter................................................................................................................. 5 Conference Supporters and Organizers ............................................................................ 7 Sponsors.......................................................................................................................... 13 Program Agenda ............................................................................................................. 29 Amazing Light Young Scholars Competition................................................................. 37 Amazing Light Laser Challenge Website Competition.................................................. 41 Foundational Questions in Physics and Cosmology (FQX) ........................................... 43 Biographies .................................................................................................................... 47 Charles H. Townes.............................................................................................. 49 Participants.......................................................................................................... 51 Presentation Abstracts..................................................................................................... 91 3 AMAZING LIGHT: Visions for Discovery 4 October 6, 2005 Dear AMAZING LIGHT Attendee, th Welcome to AMAZING LIGHT: VISIONS FOR DISCOVERY, the symposium being held in honor of the 90 birthday year of Charles Hard Townes. We are delighted that you are able to join our hosts, committee members, chairs, speakers, panelists, competition finalists, and organizers for this exciting event, made possible by the John Templeton Foundation and our partnering sponsors.* This symposium brings together a large number of distinguished physicists, astrophysicists, astronomers, cosmologists, and other scientists and thinkers who are concerned with the most fundamental questions in physics and astronomy, as well as with some of the big— and very important— questions beyond the usual realm of the physical sciences. Over the course of the next three days, you will hear presentations and discussions from an eminent group of people. We are proud and honored that they are with us to celebrate the life, work, and leadership of Professor Charles Townes.† Three major themes inspired by Professor Townes and derived from some of his ideas and questions provide the structure for the topics to be explored over the next three days of the symposium: Thursday, October 6: The Ocean of Truth — Exploring the Great Unknowns in Physics and Cosmology Friday, October 7: New Windows to Discovery — Exploring Possibilities for Innovative Technologies Saturday, October 8: The “Big Picture” — Exploring Questions on the Boundaries of Science The symposium presentations will investigate key areas of particular interest to Professor Townes and that are linked with his accomplishments in discovering surprising new aspects of the quantum-mechanical behavior of light. The primary goals are to explore the persistence of deep questions and great unknowns in physics, astrophysics, and cosmology; to emphasize the continuing potential and excitement of science and technology aimed at understanding our universe; to consider promising and ambitious domains for future research; and to explore issues and questions on the boundaries of science and technology through an interdisciplinary exchanges of ideas. Following Charles Townes’ example, AMAZING LIGHT will emphasize the role of technological innovations that accelerate scientific creativity and benefit human life. It will emphasize the creative edges of the experimental (observational) aspects of physics, astrophysics, and cosmology that may lead to new discoveries—and especially to powerful new scientific instruments—that may transform human capabilities to explore physical reality. The goal of developing cutting-edge tools will be considered in the context of advancing the scientific quest for a fundamental, integrated understanding of the universe. A pre-eminent example is the fascinating and rich innovation made possible through the study of light so successfully pioneered by Charles Townes. We believe you will find every plenary lecture and panel discussion to be highly stimulating, engaging, and thought-provoking.‡ The program also has several highlights. To end the first day, on Thursday evening we have a special plenary session with John Heilbron, Professor of History and Vice Chancellor Emeritus, University of California, Berkeley, who will illuminate us about the fascinating history of light. In addition to bringing together an outstanding, select group of research leaders and scholars for the main presentations, the program also draws together a group of promising young scientists emerging as the * Please consult the Sponsors section of this program book. † Please consult the Biographies section of this program book. Charles H. Townes received the 1964 Nobel Prize in Physics “for fundamental work in quantum electronics which has led to the construction of oscillators and amplifiers based on the maser-laser principle.” See <http://nobelprize.org/physics/laureates/1964>. ‡ Please consult the Program Agenda and Presentation Abstracts section of this program book. 5 research innovators of the future. The 18 finalists (under the age of 40) will present their research in the “Young Scholars Competition” on Friday morning. Substantial prizes will be awarded to the winners for excellence in conceptualizing and presenting fresh approaches in physics and cosmology. Also, we have a special public event on Friday evening with three of the most innovative scientists working in astronomy and astrophysics today. Other Worlds: from Imagination to Image <http://www.otherworldslecture.org/> brings together Geoffrey Marcy of UC Berkeley, Reinhard Genzel of the Max Planck Institute for Extraterrestrial Physics, and Antoine Labeyrie of the Observatory of Calern at Caussols to explain how new space- and ground-based technologies are expanding the vision of modern science and of our place in the cosmos. They will describe how optical/infrared interferometers and very large telescopes of the next generation are helping scientists to search for and image “Earth-like” exoplanets, investigate the environment of black holes and cores of galaxies, and explore regions where new planets might be formed. The formal sessions end early Saturday evening, followed by a Gala in honor of Charles Townes hosted by popular science writer and documentary-maker Timothy Ferris. The winners of the “Young Scholars Competition” will be announced at the banquet that evening, as will the winner of the “Laser Website Challenge.”§ This event also provides the public launch of a new initiative in physics research, Foundational Questions in Physics and Cosmology (FQX). This program, directed by two physicists, aims to create an international network for highly innovative, risk-taking research focused on “really big questions” in physics and cosmology with the goal of promoting breakthrough research.** Following the symposium, we will be publishing an academic volume through a major university press that will incorporate expanded versions of the presentations you will be hearing over the next three days.†† Our goal is to create a lasting impact on the scientific and academic community by advancing the symposium themes through the book. For updates on this and other future program-related matters, please check the project website <http://www.foundationalquestions.net/townes>. On behalf of our hosts, the University of California, Berkeley; our organizing committees; the Metanexus ‡‡ Institute and our entire AMAZING LIGHT administrative staff, thank you for joining us. Warm regards, Raymond Y. Chiao, University of California, Berkeley William D. Phillips, National Institute of Standards and Technology, Gaithersburg AMAZING LIGHT Co-Chairs & Charles L. Harper, Jr., John Templeton Foundation, Philadelphia AMAZING LIGHT Convenor § Please consult the respective sections in this program book. ** Please consult the FQX section in this program book. For more information, contact Max Tegmark, Massachusetts Institute of Technology <[email protected]>, and Anthony Aguirre, University of California, Santa Cruz <[email protected]>. †† For an analogous book in honor of John Archibald Wheeler, see <http://www.metanexus.net/ultimate_reality/bookrelease.htm> and <http://www.cambridge.org/catalogue/catalogue.asp?isbn=052183113X>. ‡‡ Please consult the Conference Supporters and Organizers section of this program book. 6 Conference Supporters and Organizers The Amazing