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               * QUANTUM OPTICS AND ATOM OPTICS *
                *        IN AUSTRALASIA        *
                 * * *                    * * *
                  *    MONTHLY NEWSLETTER    *
                   *      VOL VIII, NO 5    *
                    *                      *
                     *    May   2000      *
                      *                  *
                       * ISSN 1325-6467 *
                        *              * Edited by: Bill Munro
                         *  \   |   / *  Physics, University of Queensland,
                          *  \__|__/ *   QLD 4072, Australia.
                           *    |   *    email: billm@physics.uq.edu.au
                            *   |  *       phone: +61 7 3365 2422
                             *  | *          fax: +61 7 3365 1242
   Available on WWW at:                             
 http://www.physics.uq.edu.au/people/billm/qo.html     ------------------------------------------------------------------------------
CONTENTS
0. PROBLEMS
1. ABSTRACTS
2. CONFERENCE ANNOUNCEMENTS
3. WANTED TO BUY/SELL
4. SITUATIONS VACANT
5. MISC NEWS

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0. EDITORIAL NOTE

Welcome to May's newsletter. I have updated the archives of these newsletters and they can be found at  http://www.physics.uq.edu.au/people/billm/qo.html     

It is also with sorry that we note the passing of Prof. Klyshko on 10th April 2000.
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1. ABSTRACTS

Quantum Cryptographic Key Distribution: a 21st Century Technology.

P.J.Edwards, G.Ganeshkumar, W.N.Cheung and L.O.Barbopoulos, Centre for
Advanced Telecommunications and Quantum Electronics Research, University of
Canberra, Canberra, ACT 2601, Australia. 
(ITEE Society (Aust) Monitor, 25, 1, Autumn 2000).

ABSTRACT: In this general article directed towards an engineering audience
we outline the operating principles of single-photon quantum cryptographic
systems.  We then describe a quantum key distribution (QKD) testbed built at
the University of Canberra to assist in the development of free-space global
QKD systems using low earth orbit satellites.



Violation of a classical Cauchy-Schwarz inequality in photon noise spectra.

Yong-qing Li, Department of Physics, East Carolina University, Greenville,
NC 27858-4353; Paul J. Edwards, Advanced Telecommunications and Quantum
Electronics Research Centre, University of Canberra, Canberra, ACT 2601,
Australia; Xu Huang, Physics & Electronics Engineering, University of New
England, NSW, 2351, Australia; Yuzhu Wang, Joint Laboratory for Quantum
Optics, Shanghai Institute of Optics and Fine Mechanics, Academia Sinica,
P.O. Box 800-211, Shanghai 201800, P.R. China.


ABSTRACT: A Cauchy-Schwarz inequality in photon noise spectra is derived and
discussed for macroscopic fields of light.  Violation of this Cauchy-Schwarz
inequality is demonstrated experimentally in quantum noise-correlated light
beams generated by a pair of electrically-coupled light-emitting diodes. Our
measurements directly demonstrate that the violation of this Cauchy-Schwarz
inequality can be observed in the absence of sub-shot noise fluctuations in
either the single-beam intensity or the dual-beam intensity difference.  The
dual-beam quantum correlation condition required for the violation of this
Cauchy-Schwarz inequality is therefore not associated with sub-shot noise
fluctuations.
PACS numbers: 42.50.Dv, 03.65.Bz, 42.50.Lc
(to be published in J. Opt. B: Quantum Semiclass. Opt.)
     


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2. CONFERENCES / WORKSHOPS

Garda 2000: Mysteries, Puzzles and Paradoxes in Quantum Mechanics

this is to provide you with the web address of the Workshop 
"Mysteries, Puzzles and Paradoxes in Quantum Mechanics" 


http://webcesid.fisica.unimi.it/~congressi/

where you can find application form and details.



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4. SITUATIONS VACANT

POSTDOCTORAL THEORY POSITION
LASER PHYSICS AND QUANTUM OPTICS
HELSINKI INSTITUTE OF PHYSICS
HELSINKI, FINLAND

The Laser Physics and Quantum Optics Group at the Helsinki Institute 
of Physics invites applicants for a postdoctoral research position in 
theoretical studies of Bose-Einstein condensation in atomic gases. 
The initial term of the appointment is for one year, but may be 
renewed. The Institute is a national research institute for 
theoretical and particle physics in Finland. For more information, 
please consult www.hip.fi. The Institute occupies the same premises 
as the Department of Physics of the University of Helsinki.

We look for a candidate who would study dynamical processes in 2D and 
3D condensates, including condensate manipulation with external 
fields and atomic interactions in strongly confining traps. The 
candidate would also be expected to participate in the supervision of 
graduate students, and possibly in theoretical studies related to the 
experimental work by the 2D hydrogen condensate group of Dr. Simo 
Jaakkola at the University of Turku.

Applications should be postmarked by Monday, May 15, 2000. However, 
the deadline may be extended until the position is filled.  The 
starting date for the position is in Autumn 2000 (negotiable). 
Applicants should send a short description of their recent research 
and interests, a curriculum vitae including a publication list, and 
arrange three recommendation letters sent to

Prof. Kalle-Antti Suominen
Helsinki Institute of Physics
PL 9
FIN-00014 Helsingin yliopisto
Finland

Tel: +358-9-1918530
Fax: +358-9-1918458
email: Kalle-Antti.Suominen@hip.fi
www: http://www.physics.helsinki.fi/~kasuomin
 



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5. MISC NEWS