Comments on: NSA seeks to develop quantum computer to crack nearly every kind of encryption
http://www.kurzweilai.net/nsa-seeks-to-develop-quantum-computer-to-crack-nearly-every-kind-of-encryption
Accelerating IntelligenceTue, 29 Jul 2014 05:09:25 +0000hourly1http://wordpress.org/?v=3.4.1By: cloudswrest
http://www.kurzweilai.net/nsa-seeks-to-develop-quantum-computer-to-crack-nearly-every-kind-of-encryption/comment-page-1#comment-242153
cloudswrestFri, 03 Jan 2014 17:14:19 +0000http://www.kurzweilai.net/?p=217278#comment-242153Qbits are unstable, with a mean lifetime depending on the technology. A set of independent qbits would have a mean lifetime that is the reciprocal of the sum of their FITs. In a quantum computer the qbits are NOT independent, they are entangled. I have yet to see any analysis of the mean lifetime of a set of entangled qbits, but I have a sneaking suspicion it is a lot less than a set of independent qbits. To decode 2048 bit RSA you need 2048 entangle qbits, plus coherency preserving hardware in order to manipulate them. If you think controlled fusion energy is hard ...Qbits are unstable, with a mean lifetime depending on the technology. A set of independent qbits would have a mean lifetime that is the reciprocal of the sum of their FITs. In a quantum computer the qbits are NOT independent, they are entangled. I have yet to see any analysis of the mean lifetime of a set of entangled qbits, but I have a sneaking suspicion it is a lot less than a set of independent qbits. To decode 2048 bit RSA you need 2048 entangle qbits, plus coherency preserving hardware in order to manipulate them. If you think controlled fusion energy is hard …
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