Jim Lawrence
accessd at shaw.ca
Thu Aug 23 11:09:58 CDT 2012
>From what I could read (no subscription) it is a very exciting subject. I suspect within five to ten years a design of same will be on the market and at one point its price will match any today's machines. Its potential is virtually unlimited...well limited to who can program it and given the current description of the product that will be a very finite group indeed. Maybe just you and me Arthur. ;-) Jim -----Original Message----- From: dba-sqlserver-bounces at databaseadvisors.com [mailto:dba-sqlserver-bounces at databaseadvisors.com] On Behalf Of Arthur Fuller Sent: Thursday, August 23, 2012 5:00 AM To: Discussion concerning MS SQL Server Subject: [dba-SQLServer] Quantum Computing: Has Its Dawn Finally Arrived? This snippet from iProgrammer: A Quantum Computer <http://www.i-programmer.info/news/112/4679.html#> Finds FactorsWritten by Mike James Tuesday, 21 August 2012 10:00 The Shor quantum factoring algorithm has been run for the first time on a solid state device and it successfully factored a composite number. Is this the start of the quantum computing revolution? Quantum computing is promised to provide many amazing advantages, but the one that is uppermost in the collective consciousness is its ability to factor numbers. The reason for this concern is that the Public Key Infrastructure (PKI) depends on the factoring of large numbers (600 digits or more) being a difficult task for a standard algorithm. In simple terms, public cryptography depends on the asymmetry between multiplying two primes together - easy - and factoring the number that results - difficult. A quantum computer, on the other hand, promises to factor a number of any size in one operation and, if one can be built, the future of the PKI looks bleak and we would have to find encryption methods that were safe against a quantum attack. The summary of this can be found here: http://www.i-programmer.info/news/112/4679.html The original article published in Nature Physics can be found here: http://www.nature.com/nphys/journal/vaop/ncurrent/full/nphys2385.html (subscription required). -- Arthur Cell: 647.710.1314 Prediction is difficult, especially of the future. -- Niels Bohr _______________________________________________ dba-SQLServer mailing list dba-SQLServer at databaseadvisors.com http://databaseadvisors.com/mailman/listinfo/dba-sqlserver http://www.databaseadvisors.com