Research on PT-symmetric optics by Tsampikos Kottos, associate professor of physics, was mentioned at the 2012 Spring Review of the Air Force Office of Scientific Research.
In this meeting, program directors from AFOSR Scientific Directorates presented briefings that highlighted basic research programs beneficial to the U.S. Air Force. The review took place March 5-9.
Kottos’s work appears on page 26 of this presentation.
A paper written by two faculty members and three undergraduates was published in the American Physical Society’s Physical Review A, Volume 84, on Oct. 13. Their paper was one of six highlighted in the publication’s Physics Focus and This Week in Physics. The paper is titled “Experimental study of active LRC circuits with PT symmetries.”
The authors include Tsampikos Kottos, associate professor of physics; Fred Ellis, professor of physics, Joseph Schindler ’12, Ang Li ’13 and Mei Zheng ’10.
The abstract of the paper is online here.
Tsampikos Kottos, associate professor of physics, received a grant worth $140,121 from the National Science Foundation on Sept. 1. The grant will support a project titled “IDR:Novel Photonic Materials and Devices based on Non-Hermitian Optics” through August 2014. Kottos is collaborating with faculty from Southern Methodist University, University of Central Florida, University of Arkansas and Yale University.
Wesleyan is pleased to announce that during its most recent review, the Board awarded tenure to four faculty effective July 1, 2011.
Ulrich Plass, associate professor of German studies, joined the Wesleyan faculty in 2004 as assistant professor. Plass is a specialist in German literature, literary criticism, and critical theory, with a particular focus on the works of the German philosopher Theodor Adorno. He conducted his undergraduate studies at the University of Hamburg, Germany; his M.A. is from the University of Michigan,
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Tsampikos Kottos, assistant professor of physics, received a grant worth $116,634 from the Department of the Air Force for a study titled “Ab initio approach to nonlinear dynamics of collective excitations in networks of coupled optical Microresonators.” The grant will be applied through July 2013. The grant is shared with CUNY College.
Carl West ’11, Tsampikos Kottos, assistant professor of physics, and Tomas Prosen of the University of Ljubljana in Slovenia, are the co-authors of an article titled “PT-Symmetric Wave Chaos,” published in Physical Review Letters 104 in 2010.
“This work studied the universal properties of this crossover and demonstrated that a simple scaling function could embody the effects of such dramatically different changes as increasing the system size, varying the initial energy, or having varying degrees of imperfections / disorder in the system,” West explains. “While these results were obtained from a toy model, they carry direct applications to optics where the balanced use of gain and loss has become a booming field over the past years, yet general questions of the effects of disorder or system size scaling were as of yet unknown.”
Tsampikos Kottos, assistant professor of physics; Joshua Bodyfelt Ph.D ’09; and Mei Zheng ’10 are the co-authors of the paper “Fidelity in Quasi-1D Systems as a Probe for Anderson Localization,” published in Acta Physica Polonica A, Proceedings of the 4th Workshop on Quantum Chaos and Localisation Phenomena, Warsaw, in 2009. They wrote the paper with Ulrich Kuhl, and Hans-Jürgen Stöckmann, who are collaborators from the University of Marburg.
This publication is part of the conference proceedings for a workshop at the Polish Academy of Sciences in Warsaw where Kottos presented this past summer. The combined theoretical and experimental work done in this project put forward a method for which the celebrated phenomenon of Anderson Localization could be detected through a measure known as Fidelity, which is typically thought of as probing the stability of a system against external perturbations. This work will constitute a large part of Zheng’s senior physics thesis.
Tsampikos Kottos, assistant professor of physics, and physics and mathematics major Gim Seng Ng ’08 are co-authors of “Avalanches of Bose-Einstein condensates in leaking optical lattices,” published in New Journal of Physics, 11, 073045 in 2009. The paper is about novel properties of Bose-Einstein condensates (ultra-cold atoms) in open systems. This project constituted a large part of Ng’s senior honors thesis in physics.
Tsampikos Kottos, assistant professor of physics, is the co-author of “Exponentially Fragile PT-Symmetry in lattices with Localized Eigenmodes,” published in Physical Review Letters 103,030,402 in 2009. The paper discusses the effects of disorder on a previously excluded class of quantum mechanical systems.
Tsampikos Kottos, assistant professor of physics, Joshua Bodyfelt Ph.D ’09 and Mei Zheng ’10 are the co-authors of “Probing Localization in Absorbing Systems via Loschmidt Echos” published in Physical Review Letters, 102, 253901 in 2009.
Tsampikos Kottos, assistant professor of physics; Moritz Hiller, a former visiting scientist; and Katrina Smith-Mannshott BA ’08, MA ’09 are the co-authors of the article, “Occupation Statistics of a BEC for a Driven Landau-Zener Crossing,” published in Physical Review Letters, Issue 102, in 2009.
Tsampikos Kottos, assistant professor of physics, and Moritz Hiller are co-authors of the article “Wave-packet dynamics in energy space of a chaotic trimeric Bose-Hubbard system,” published Physical Review A Issue 79, No. 023621 in 2009.