IBM makes huge stride toward developing scalable quantum computer


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Message boards : Science (non-SETI) : IBM makes huge stride toward developing scalable quantum computer

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Profile BMaytum
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Message 1202784 - Posted: 5 Mar 2012, 23:48:37 UTC

News of a recent IBM advancement in Quantum Computing
http://www.techspot.com/news/47598-ibm-makes-huge-stride-toward-developing-scalable-quantum-computer.html. Watch the IBM video there too.

I want one of those 10+ Qbit processors to use for crunching Seti work units (though the project servers at Berzerkeley probably couldn't feed WUs and assimilate results fast enough).
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Message 1202901 - Posted: 6 Mar 2012, 8:31:55 UTC
Last modified: 6 Mar 2012, 8:43:54 UTC

What ever became of the technology which once was being dubbed "bubble technology"?

How about putting some 100 Core i7 CPU's together on one single motherboard of a certain size or having certain characteristics and making these 100 processors be able to work together in parallell?

What about memory needs (DMA), interrupts (IRQ's) and so on? I guess the requirements for this may be equal to the capabilities of the processors that are running. What is the general speed of such a system? There is always the slowest component of a system who is in charge of things.

I guess you may have to use water cooling for any such things to work safely. Otherwise it only gets to hot.

Is this way of doing things a solution to the increased needs for computing power and may we also still be needing to do the the same thing when it comes to GPU-computing as well?

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Message 1202931 - Posted: 6 Mar 2012, 10:53:45 UTC
Last modified: 6 Mar 2012, 10:55:22 UTC

There was a BOINC project called AQUA@home which strove to emulate a quantum computer made by a firm called D-Wave. This firm sold its first computer,D-Wave 1, to a military aircraft and missile manufacturer, Lockheed-Martin. Then AQUA@home disappeared. I was the coauthor of an article on quantum computing in the Italian edition of Technology Review magazine edited by MIT in 1996.Since then nothing has changed, notwithstanding many articles in scientific and technical journals. Bubble technology for memories was a dead end street, it just disappeared.
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Message 1203040 - Posted: 6 Mar 2012, 16:04:01 UTC - in response to Message 1202931.

I presume the claimed teraflop processing power comes from the fact that light has a very high frequency. I would like to see how a quantum computer is able to compute however?

I worked on microwave computer processing about 45 years ago. So far as I know nothing came from these primitive development even though a passive structure could perform logical operations.

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Message 1203063 - Posted: 6 Mar 2012, 16:35:49 UTC - in response to Message 1203040.

No, the basic idea is that a bit can be zero or one simultaneously. It is called a qubit. So a byte can contain 2 exp 8 different values. But you won't know which value it has until you make a measurement.
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Message 1203210 - Posted: 7 Mar 2012, 3:37:42 UTC - in response to Message 1203063.

Each 8 bit byte can have 256 patterns or states. If each qubit had 3 states then there would be only 6561 possible states in an 8-bit byte. I am not sure how this relates to the speed quoted since I could make a computer with any word length that I want. Speed is only limited by the clock which assumes that I have enough power to switch the device to it's full capability.

Message boards : Science (non-SETI) : IBM makes huge stride toward developing scalable quantum computer

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