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From: pierce@lanai.cs.ucla.edu (Brad Pierce)
Newsgroups: comp.theory,sci.physics
Subject: Re: Quantum communication thwarts eavesdroppers
Message-ID: <30237@shemp.CS.UCLA.EDU>
Date: 26 Dec 89 19:15:25 GMT
References: <1989Dec22.191422.21564@agate.berkeley.edu>
Sender: news@CS.UCLA.EDU
Reply-To: pierce@lanai.UUCP (Brad Pierce)
Organization: UCLA Computer Science Department
Lines: 21

In article <1989Dec22.191422.21564@agate.berkeley.edu> bks@alfa.berkeley.edu (Brad Sherman) writes:
*From _New_Scientist_  9 December, 1989, pp.25-26 (without permission)
*Byline: David Deutsch
*
*        Quantum Communication Thwarts Eavesdroppers
*
*Researchers at IBM's Thomas J. Watson Laboratory in Yorktown Heights,
*New York, have built a device for sending information between two
*parties with absolute security from eavesdropping.  The device uses
*a form of coding called "Quantum Public Key Distribution["] (QPKD),
*which exploits quantum effects.  It cannot be implemented on any
*existing computer because of the intrinsic limitations of classical
*(that is, non-quantum) information processing.

                << Body of article omitted -- Brad >>

*The lasting significance of QPKD will be for the foundations of
*computer science.  The Turing Machine is no longer a universal 
*model for practical computations.

-- Brad      (an excerpt from the sci.crypt newsgroup)