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#1 2010-01-19 23:03:18

MathsIsFun
Administrator
Registered: 2005-01-21
Posts: 7,529

How quantum computers work

Currently reading http://arstechnica.com/science/guides/2 … s-work.ars in the hopes of understanding how quantum computers work.


"The physicists defer only to mathematicians, and the mathematicians defer only to God ..."  - Leon M. Lederman

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#2 2010-01-20 03:31:15

Ricky
Moderator
Registered: 2005-12-04
Posts: 3,791

Re: How quantum computers work

If the phonebook has 10,000 entries, on average you'll need to look through about half of them—5,000 entries—before you get lucky.

Umm, who looks through a phonebook sequentially?  Worst case you would need to look at 14 entries.  So it looks like he is talking about an unsorted phone book.


"In the real world, this would be a problem.  But in mathematics, we can just define a place where this problem doesn't exist.  So we'll go ahead and do that now..."

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#3 2010-01-20 07:19:50

John E. Franklin
Member
Registered: 2005-08-29
Posts: 3,552

Re: How quantum computers work

The juicy physics stuff on page 4 to 6 is amazing to try to read.
The 85% reading they get over and over that should be 75%
on the electrons.  Then they move over to photons later.
Maybe we should tell ilovephysics about this article.


igloo myrtilles fourmis

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