--- begin forwarded text
Date: Sat, 02 Oct 1999 18:06:57 -0400
From: Somebody
To: rah <[EMAIL PROTECTED]>
Subject: [Fwd: Phys. Rev. Focus--1 OCT 1999]
Bob --
More quantum cryptography - more-or-less
incomprehensible...
--
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From: Focus List Owner <[EMAIL PROTECTED]>
To: [EMAIL PROTECTED]
Subject: Phys. Rev. Focus--1 OCT 1999
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PHYSICAL REVIEW FOCUS 1 OCT 1999 http://focus.aps.org/
from the American Physical Society
Introductions to the Focus stories of the past week;
visit http://focus.aps.org for the complete stories.
PHOTONS ON DEMAND
Laser physicists are good at producing and manipulating single
photons, but as with good comedy, the timing is important. Even the
best experiments in quantum cryptography and computing--applications
that make use of single photon properties--use sources that emit
photons at random times. In the 4 October PRL a French team
demonstrates a system that emits single photons on a dependable
schedule at a frequency of 3 MHz. One other "triggered" photon
source which operates on completely different principles was
reported earlier this year. With these new techniques, researchers
know exactly when and where a single photon will be found, and they
are a step closer to quantum applications, such as cryptography that
allows the receiver of information to deduce whether a message has
been intercepted.
(Brunel, Lounis, Tamarat, and Orrit, Phys. Rev. Lett. 83, 2722.
COMPLETE Focus story at http://focus.aps.org/v4/st17.html
Link to the paper: http://publish.aps.org/abstract/PRL/v83/p2722/)
SCIENCE WRITERS AND JOURNALISTS:
The American Institue of Physics has just launched a web site
(http://www.aip.org/physnews/pnsentry.htm) containing full-text of
new, notable journal articles. Write to [EMAIL PROTECTED] to
register. Sorry, this site is for writers and journalists only.
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Robert A. Hettinga <mailto: [EMAIL PROTECTED]>
The Internet Bearer Underwriting Corporation <http://www.ibuc.com/>
44 Farquhar Street, Boston, MA 02131 USA
"... however it may deserve respect for its usefulness and antiquity,
[predicting the end of the world] has not been found agreeable to
experience." -- Edward Gibbon, 'Decline and Fall of the Roman Empire'
