Re: quantum hype

2003-09-21 Thread Arnold G. Reinhold
At 6:38 PM -0400 9/18/03, John S. Denker wrote: Yes, Mallory can DoS the setup by reading (and thereby trashing) every bit. But Mallory can DoS the setup by chopping out a piece of the cable. The two are equally effective and equally detectable. Chopping is cheaper and easier. Other

Re: quantum hype

2003-09-21 Thread Peter Fairbrother
There are lots of types of QC. I'll just mention two. In classic QC Alice generates polarised photons at randomly chosen either + or x polarisations. Bob measures the received photons using a randomly chosen polarisation, and tells Alice whether the measurement polarisation he chose was + or x,

Re: quantum hype

2003-09-21 Thread Dave Howe
no. its the underlieing hard problem for QC. If there is a solution to any of the Hard Problems, nobody knows about them. right, so it's no better than the arguable hard problem of factoring a 2048 bit number. Peter Fairbrother may well be in possession of a break for the QC hard problem - his

Re: quantum hype

2003-09-21 Thread Andreas Gunnarsson
On Sun, Sep 21, 2003 at 01:37:21PM +0100, Peter Fairbrother wrote: [cloning photons] There is also another less noisy cloning technique which has recently been done in laboratories, though it doubles the photon's wavelength, which would be noticeable, To get rid of the wavelength change it

The Code Book - in CD form

2003-09-21 Thread Ian Grigg
Has anyone reviewed Simon Singh's CD version of The Code Book ? = http://www.simonsingh.net/The_CDROM.html After 12 months of intense development, the interactive CD-ROM version of The Code Book is now available. I might be biased, but I think that it