************************************ * QUANTUM OPTICS AND ATOM OPTICS * * IN AUSTRALASIA * * * * * * * * MONTHLY NEWSLETTER * * VOL VI, NO 1 * * * * January 1998 * * * * ISSN 1325-6467 * * * Edited by: Bill Munro * \ | / * Physics, University of Queensland, * \__|__/ * QLD 4072, Australia. * | * email: munro@physics.uq.edu.au Available on WWW at: * | * phone: +61 7 3365 2422 http://www.anu.edu.au * | * fax: +61 7 3365 1242 /Physics/newsletter * * ------------------------------------------------------------------------------ CONTENTS 0. PROBLEMS 1. ABSTRACTS 2. CONFERENCE ANNOUNCEMENTS 3. WANTED TO BUY/SELL 4. SITUATIONS VACANT 5. MISC NEWS ______________________________________________________________________________ ******************************************************************************* 0. EDITORIAL NOTE Welcome to the first newsletter of the year. Sorry for it being slightly late. Normally these will be send out as close to the beginning of the month as possible. Please keep the abstracts etc coming in. Now a note from Barry Sanders We "subscribers" would like to thank Murray Hamilton for the excellent job he has done as editor of the monthly newsletter and wish all the best to Bill Munro for the excellent job we know he will do! Barry Sanders Macquarie University 16 December 1997 ******************************************************************************* 1. ABSTRACTS Title: Cavity induced two photon absorption in unidentical atoms Author: M.S. Kim(1,*) and G.S. Agarwal(1,2) Address:(1) Max-Planck-Institut for Quantum Optics, Hans-Kopfermann-Str. 1, Garching, D-85748, Germany (2) Physical Research Laboratory, Ahmedabad-380 009, India (*) permanent address: Department of Physics, Sogang University, Seoul, South Korea Status: Accepted for publication (Phys.Rev.A) Abstract: We predict the existence of cavity induced two photon absorption in unidentical atoms and demonstrate the nonclassical character of this two photon absorption. We show the effects of photon statistics on cavity induced two photon absorption. We also note the possibility of trapping states in the present system. _______________________________________________________________________________ Title: Generalized coherent states and phase-space-interference in multi-mode systems Authors: M. J. Gagen Email: gagen@physics.uq.edu.au Address: Physics Department, University of Queensland, QLD 4072, Australia Journal: Fortschritte der Physik: Progress of Physics Status: Accepted Abstract: The Hilbert space of a single mode quantum system is spanned by a countable set of orthonormal basis states denoted |n> for n = 0, 1, 2, etc. Such a basis can be used to define quasi-probability distributions over a two-dimensional quantum phase plane. Multi-mode quantum systems are spanned by orthonormal product states |n_1 .. n_k> = |n_1> x .. x |n_k> which can be used to define quasi-probability distributions over a 2k-dimensional phase volume. However, this multi-mode basis set is also countable and can be uniquely specified by a single integer label. This labeling allows us to define new collective operators and generalized coherent states to construct probability distributions over a new two-dimensional phase plane. These distributions represent the system's 2k-dimensional phase volume with perfect fidelity, and allow us to apply phase space interference (PSI) approaches to multi-mode quantum systems. ******************************************************************************* 2. CONFERENCES / WORKSHOPS _______________________________________________________________________________ "Workshop on Bose-Einstein Condensation University of Auckland, January 19-20, 1998. (the LaTex announcement is an appendix in the Sept issue of this newsletter - ed.) _________________________________________________________________________ Fourth International Conference on QUANTUM COMMUNICATION, MEASUREMENT, AND COMPUTING Northwestern University, Evanston, Illinois, USA August 22-27, 1998 First Announcement It is our pleasure to inform you about the planning of QCM'98. This Conference will be the fourth of a series of very successful meetings that have been held in: Paris, November 1990, Quantum Aspects of Optical Communications Nottingham, July 1994, Quantum Communications and Measurements Fuji-Hakone, September 1996, Quantum Communications and Measurements This time the Conference will be held at the beautiful campus of Northwestern University in Evanston, Illinois (near Chicago, USA). With respect to the previous conferences of the series, which were mainly theoretical, QCM'98 will now devote more attention to experiments. Another novelty is that quantum computation now enters the Conference as a main topic. This is because in the last few years this topic has naturally brought together the main fields of the former conferences of the series, namely, quantum measurement theory, quantum communication and information processing, quantum noise, quantum open system, and quantum optics. We intend to have Plenum publish the proceedings, as in the previous Nottingham and Hakone conferences. Sponsorship has so far been secured from Tamagawa University and Northwestern University. The program of the conference will be in the form of invited, regular, and poster papers. Topics: 1. Quantum information theory 2. Quantum computing 3. Quantum communication systems, cryptography 4. New quantum effects and their experiments 5. Generation and detection of nonclassical light 6. Quantum noise, stochastic processes and filtering 7. Quantum measurement theory People who are interested in contributing a paper to the Conference are asked to submit a one-page abstract via e-mail by April 30, 1998. Conference Address: QCM'98 c/o Prof. Prem Kumar Department of Electrical and Computer Engineering Northwestern University 2145 North Sheridan Road Evanston, IL 60208-3118 USA Fax: + 847 467 3550 E-mail address: qcm@soliton.ece.nwu.edu Secretarial Contact: Ms. Kathie Cerveny Tel: + 847 467 2172 Fax: + 847 467 3550 ****************************************************************************** 4. SITUATIONS VACANT Two Year Teaching/Research Position in Theoretical Physics Department of Physics, University of Auckland We are seeking a person for a two year position beginning October 1st 1998. The successful candidate will work in the research group of Professor D F Walls. The present research activities are in the fields of Quantum and Atom Optics and Bose-Einstein Condensation. The successful candidate will have teaching duties in the Department of Physics equivalent to 50% of a Lecturer's load. The salary will be NZ$45,000 per annum plus a relocation allowance. Interested candidates please apply before February 1st, 1998 to Professor D F Walls Department of Physics The University of Auckland Private Bag 92019, Auckland New Zealand e-mail d.walls@auckland.ac.nz ****************************************************************************** 5. MISC NEWS ****************************************************************************** The end!