QUANTUM COMPUTER PERFORMS FIRST SUCCESSFUL FACTORING

[ciphergoth]

QUANTUM COMPUTER PERFORMS FIRST SUCCESSFUL FACTORING

IBM SCIENTISTS BUILD MACHINE THAT SOLVES MATHEMATICAL PROBLEMS WITH QUANTUM MECHANICS

NUMBER 15 FACTORED

FACTORS ARE 3 AND 5

http://www.research.ibm.com/resources/news/20011219_quantum.shtml

Comments

Re: Gulp.

[bootpunk.livejournal.com]

As per above, mibby I should leave a response to the expert in our midst, but afaik, it's the transmission of single photons twixt points - so an opto-connection would suffice. I'm sure ciphergoth will correct me if I'm wrong.

Re: Gulp.

[babysimon]

"an opto-connection would suffice"]

Last mile?

Re: Gulp.

[bootpunk.livejournal.com]

Again, IANAC(ryptofreak), but I seem to recall even our own BT saying that they could see thousand metre connections shortly/now, and much further soonish. The connections aren't the major issue, iirc. But I'm out of me depth here, and I can't remember the details clearly, so I'll STFU.

Re: Gulp.

[ciphergoth.livejournal.com]

For the record, I think quantum cryptography is silly. For provable security, you have to exchange secret keys in advance to get the authentication working, and if you're going to do that then I don't think the massive inconvenience buys you much over perfectly ordinary symmetric techniques.