Volume 54 of the Advances Series contains ten contributions, covering a diversity of subject areas in atomic, molecular and optical physics. The article by Regal and Jin reviews the properties of a Fermi degenerate gas of cold potassium atoms in the crossover regime between the Bose-Einstein condensation of molecules and the condensation of fermionic atom pairs. The transition between the two regions can be probed by varying an external magnetic field. Sherson, Julsgaard and Polzik explore the manner in which light and atoms can be entangled, with applications to quantum information processing and communication. They report on the result of recent experiments involving the entanglement of distant objects and quantum memory of light. Recent developments in cold Rydberg atom physics are reviewed in the article by Choi, Kaufmann, Cubel-Liebisch, Reinhard, and Raithel. Fascinating experiments are described in which cold, highly excited atoms (“Rydberg” atoms) and cold plasmas are generated. Evidence for a collective excitation of Rydberg matter is also presented. Griffiin and Pindzola offer an account of non-perturbative quantal methods for electron-atom scattering processes. Included in the discussion are the R-matrix with pseudo-states method and the time-dependent close-coupling method. An extensive review of the R-matrix theory of atomic, molecular, and optical processes is given by Burke, Noble, and Burke. They present a systematic development of the R-matrix method and its applications to various processes such as electron-atom scattering, atomic photoionization, electron-molecule scattering, positron-atom scattering, and atomic/molecular multiphoton processes. Electron impact excitation of rare-gas atoms from both their ground and metastable states is discussed in the article by Boffard, Jung, Anderson, and Lin. Excitation cross sections measured by the optical method are reviewed with emphasis on the physical interpretation in terms of electronic structure
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Paul Berman is Professor of Physics at the University of Michigan. In a career spanning over 40 years, Professor Berman has been engaged in theoretical research related to the interaction of radiation with matter. Of particular interest is the identification of atom-field configurations which can result in qualitatively new phenomena. Professor Berman is a Fellow of the American Physical Society and the Optical Society of America. He is the co-author of a textbook, Principles of Laser Spectroscopy and Quantum Optics, published in2010 by Princeton University Press.
University of Michigan, Physics Department, Ann Arbor, USA
Chun C. Lin is Professor of Physics at the University of Wisconsin – Madison. He has been working in various areas of atomic and molecular physics for several decades. He received the American Physical Society Will Allis Prize “for advancing the understanding of the microscopic behavior of ionized gases through his innovative and pioneering studies of excitation in electron and ion collisions with atomic and molecular targets” in 1996. He is a Fellow of the American Physical Society and has served as the Chair of the Division of Atomic, Molecular and Optical Physics in the American Physical Society (1994 – 1995).
Physics Department, University of Wisconsin, Madison, WI, USA
Ennio Arimondo is Professor of Physics at the University of Pisa, Italy. In a a long research career, Professor Arimondo has been engaged in experimental and theoretical research related to laser spectroscopy, the interaction of radiation with matter, laser cooling and new phenomena of ultracold atomic gases. Professor Arimondo is a Fellow of the American Physical Society and of the Institute of Physics. He is editor of Conference and School Proceedings.
Universita di Pisa, Italy