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Cross Sections DEPARTMENT OF PHYSICS AND ASTRONOMY UNIVERSITY OF ROCHESTER WINTER 2004 Physics and Astronomy • WINTER 2004 Message from the Chair —Arie Bodek tory for Laser Energetics). This must be In fact, in a nationwide survey of U.S. As we enter the 21st century, while surely one of the reasons that the Uni- graduate students conducted in 2001, the building on the traditional strengths of versity of Rochester was ranked 6th department was ranked second in overall the department and the University, we nationwide in atomic physics/ plasma graduate-student satisfaction. As a result, are also moving in new physics by U.S. News & World Report in our domestic applicant pool has been in- directions. Because of 2003. We have recently also strength- creasing and in fall 2003 we had a class the small size of both ened our program in chemical physics of 35 superb entering graduate students. the department and the with the appointments of Esther Conwell We wish to take this opportunity to University, collaborative and Lewis Rothberg as professors of thank all our friends who have contrib- activities in research chemistry and physics, and the addition uted so generously to the support of the and education among of Mark Bocko as professor of electrical department. By completing the form on faculty members in dif- engineering and physics. In addition, we the last page of our newsletter you can ferent subdisciplines within physics are working on new collaborative ven- continue (or begin) that tradition of giv- and astronomy, as well as in association tures with the medical school in the ing that will assure the future excellence with other departments, are growing area of medical physics. of the department. Other ways to help steadily. For example, a new program Several of our faculty and students our cause is to inform any promising stu- was initiated in fall 2003 on a joint Ph.D. have received awards during this past dents about our summer undergraduate in physics and optics, and experimental academic year. Steve Manly, our Distin- research program (REU), and to encourage and theoretical collaboration between guished Brugler Teaching Professor since students interested careers in physics or the quantum optics groups in both de- 2002, was chosen by the Carnegie Foun- astronomy to apply for graduate study partments are currently under way. The dation and the Council for the Advance- at Rochester. Application material for all Deparments of Physics and Astronomy ment and Support of Education (CASE) these programs is available on our Web and Mathematics have initiated a col- as New York State Professor of the Year pages (www.pas. rochester.edu). If you laboration in research in mathematical in 2003. Nicholas Bigelow and David know of any exceptional undergraduates physics, and hold joint seminars. Mem- Meyerhofer received the first Dean’s whom we should consider either for our bers of our particle physics and nuclear Awards for contributions to graduate REU program or for graduate studies, we physics groups are joining together on a education in 2003, and Shaul Mukamel, would appreciate it if you would please program to investigate nucleon struc- professor of chemistry and physics was send their names and e-mail addresses ture and neutrino oscillations by using given the Ellis R. Lippincott Award from to Barbara Warren ([email protected]. electron scattering beams at Jefferson the Optical Society of America for 2003. edu), and we will contact them directly. Lab (Newport News, Va.) and neutrino For completeness, I must also mention Any help from our alumnae and alumni beams at Fermilab (MINERVA). Stephen that Arie Bodek was awarded the 2004 along these lines would be greatly wel- Teitel won a bridging fellowship (in 2003) Panofsky Prize in Experimental Particle comed. to the Department of Brain and Cogni- Physics from the American Physical Several years ago, the University in- tive Sciences to venture into biological Society. itiated a tradition of hosting yearly physics, and David Douglass won a Graduate Student Kam Wai Clifford Meliora Weekend reunions (see www. bridging fellowship (in 2004) to the Chan was awarded the University’s rochester.edu/alumni). I encourage all Eastman School of Music. We are proud Messersmith Fellowship, and our fresh- our alumnae, alumni, and friends to of our programs in atomic physics (col- man major Siddharth Parameswaran come and visit us in fall ’04. For the laboration between the Departments of won the University’s Delno Sisson Prize latest news about the department, please Physics and Astronomy and Optics) and in 2003. Over the years, we have given visit our Web page, where you can also plasma physics (involving the Depart- high priority to the training of our un- find the current and several recent ments of Physics and Astronomy and dergraduate and graduate students, and issues of Cross Sections online. Mechanical Engineering and the Labora- this attention has not gone unnoticed. 180 µm) that are bound to have major Cross Sections On the Cover impact on our understanding of the Editors: T. Ferbel and S. Rajeev origin of galaxies. Published by the Department of Physics and August 25, 2003: Launch of the Space Infrared Telescope Facility or Astronomy of the University of Rochester, and Important notices: Department phone: (585) SIRTF (named the Spitzer Space Tele- distributed to alumni and friends free of charge. 275-4344 and fax: (585) 273-3237. scope on December 18, 2003) on a Delta Copies may be obtained by writing to CROSS If you change your mailing address, please rocket from Cape Canaveral, Florida. It’s SECTIONS, Department of Physics and Astronomy, contact Bob Knox with your new whereabouts been a long wait, but our astronomers University of Rochester, Rochester, New York ([email protected]). Also let him know are finally going to get the data in the 14627-0171 USA. your current e-mail address. infrared spectrum (wavelengths of 3 to 2 SCIENCE HIGHLIGHTS Physics and Astronomy • WINTER 2004 Regina Demina Joins Our Effort in Particle Physics It is often said that curiosity kills cats. Regina Demina, formerly with Kansas State, and now our new associate pro- fessor in experimental particle physics, does not wish to comment on such fatal issues, but claims that when she watches her two cats, they remind her of scien- tists. One of her cats is especially puz- zled by the underlying principle of op- eration of their water fountain, and constantly tries to knock it to the floor, presumably in the hope of figuring out what makes it work. Regina maintains that this is the same method that par- ticle physicists have also been using for over a century to study fundamental properties of matter. Inspired by Ruther- ford, smashing together particles in high energy colliders, she too hopes to learn Graduate student Elizabeth Groves along with Regina (right) next to the new the principles underlying the universe. probing station for checking properties of silicon microstrip detectors She says that the puzzle that brought her to physics was the origin of mass. just one of the hypotheses. Models ment of silicon detectors that can with- Closely related to this question is the using strong dynamics (new quark de- stand high doses of radiation, algorithms mystery of electroweak symmetry break- grees of freedom) also offer interesting that maximize the capabilities of these ing (EWSB). The Fermilab Tevatron, and alternatives. The idea of a possible role detectors, and analyses targeted at un- shortly the CERN Large Hadron Collider of the top quark in EWSB is especially derstanding the mechanism of EWSB. (LHC), are collider accelerators that probe intriguing. In the presence of a vast Regina started her research at Rochester the EWSB energy scale, and are there- variety of models, an experimenter’s by setting up our first silicon-detector fore the likely places where the discov- task could become confusing. Luckily, facility (most of us have probably noticed ery of the mechanism behind the EWSB most models predict similar signatures the noise and dust on the 3rd floor!). will take place. That is why her research that rely largely on an experiment’s Silicon tracking devices provide the high- program for the next 10 to 15 years is ability to identify heavy quarks, e.g., est precision available for measurement focused on utilizing data from these ma- the bottom or b-quarks. of track coordinates—at a level of few chines. The mechanism of EWSB is un- Silicon-based tracking devices have microns. These devices are used to known, and although the Higgs mech- proven to be highly effective for tagging measure lifetimes of subatomic particles anism (with Richard Hagen one of its heavy quarks based on the quark life- that travel only a fraction of a millimeter discoverers) is the most likely candidate, times. Regina’s research program is until it is proven through experiment, it is therefore concentrated on the develop- Continued on page 6 John Howell—New Experimenter in Quantum Optics As many of you know, John Howell The processing of quantum informa- by its frequency, where it is located in joined our faculty as assistant professor tion (or “QIP”) is a relatively new field space and time, its polarization, etc. The of physics and quantum optics in Feb- in physics. QIP exploits nature for de- Howell group studied cloning of the polar- ruary 2002. This was just after he com- veloping capabilities such as sending ization of photons. Polarization is just pleted his postdoctoral work at the secret messages, teleporting quantum the orientation of the electric field, or a University of Oxford at the Centre for states, cloning quantum particles, and measure of how the electric field oscil- Quantum Computation.