Thursday, October 6th 2011

Quantum Computers: Research Into New Way of Creating Qubits With Improved Stability

Qubits are the quantum version of the smallest building block used in conventional digital computers today. They are subject to the laws of quantum physics, which means they possess the remarkable property of allowing them to be in a superposition of both zero and one states, until a measurement is taken, at which point they become either a one or a zero. This property allows the result of many possible outcomes to be calculated at once, making a quantum computer insanely fast and powerful – just the sort of thing you need for such things as climate modelling, code-breaking, Folding@Home style distributed projects, advanced artificial intelligence – and possibly gaming computers of the like never before seen, if they can be made small and cheaply enough. To give an idea of the enormous advance in processing power possible, physicist Rui-Rui Du of Rice University, Houston, Texas, who is researching the creation of stable qubits explained:
In principle, we don't need many qubits to create a powerful computer. In terms of information density, a silicon microprocessor with 1 billion transistors would be roughly equal to a quantum processor with 30 qubits.
It’s not hard to see that using something like 64 qubits would increase processing power beyond anything we can imagine now.

However, creating these qubits and keeping them stable enough to perform useful calculations with has been a serious challenge since research into quantum computers began. However, if an approach called "topological quantum computing" bears fruit, then keeping qubits stable might just get a lot easier. In this method, qubits will be made in pairs, with an almost immutable shared identity, which makes them much more stable and resilient to interference (presumably because one qubit can "error-correct" for corruption in the other qubit) which causes them to lose their delicate state of superposition, an effect called quantum decoherence.

Unfortunately, the catch is that these stable qubit pairs, known as "majorana fermions", have not yet been seen in experiments. Physicists now think that it might be possible to create these by "marrying" a two dimensional topological insulator to a superconductor. Due to the peculiar properties of topological insulators, the elusive majorana fermions should be created precisely where the two materials meet, allowing them to potentially be used for quantum computing.

Further refinements of topological insulators and experiments will determine whether such qubits can be made, whether they’re stable enough and whether they can be used in a practical commercial computer. Finally, whether the technology to enable this kind of processing power will ever become viable and cheap enough to incorporate into a high performance desktop PC or gaming console remains to be seen.Source: TG Daily
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28 Comments on Quantum Computers: Research Into New Way of Creating Qubits With Improved Stability

#1
Rowsol
I see whatcha did there.
Posted on Reply
#2
Jegergrim
by: Rowsol
I see whatcha did there.
I must admit, I didn't :p

Interesting read Qubit, I also read somewhere else that it would be approximately 50 years before our transition into Quantum computing (with current progress in the tech)
Posted on Reply
#4
Mussels
Moderprator
inb4qubit posts in this thread


OH GOD HE STARTED THE THREAD. QUBITS ARE SELF AWARE. SKYNET IS UPON US.
Posted on Reply
#5
jsfitz54
Pat yourself on the back.

by Mussels: OH GOD HE STARTED THE THREAD.

Self Aggrandizement at its finest!:p
Posted on Reply
#6
Mussels
Moderprator
i bet he found this news googling himself.
Posted on Reply
#7
[H]@RD5TUFF
Interesting read thanks for the post.
Posted on Reply
#8
Inceptor
Well that's interesting, but it sounds a long long way from practical implementation in complex computing.
They say that they think that they can create 'stable qubit pairs'. But after they've been created, how will they be manipulated into some kind of practical computing substrate/platform/call it what you will?

"Oh yes! we can create gagillion petaflop quantum computers! The world will be changed forever!"
"Real artificial intelligence! We'll be able to have a computer solve *P and NP*! Hurrah!"
"Singularity here we come! I can't wait to be nothing more than bits stored in a piece of computronium!"

As always, everything is 20 years away, to the great dismay of the aging baby boomers who came up with these ideas.
Posted on Reply
#9
BorgOvermind
In short: they have no clue how to make this work.
Sine some of the physical basics at this time are false, any expansion of those theories will also be with no practical result.
They should take the research beyond text-book physics if they really want to come up with something new and special.
Posted on Reply
#10
theJesus
I think we could use a Qubit with improved stability.
Posted on Reply
#11
qubit
Overclocked quantum bit
by: theJesus
I think we could use a Qubit with improved stability.
Oi, watcha trying to say?! :laugh:

Everybody, I thought the article was interesting, but yes, I couldn't resist posting a news story about myself. :p
Posted on Reply
#13
theJesus
by: qubit
Oi, watcha trying to say?! :laugh:
I was merely talking about the potential scientific and technological applications of a Qubit with improved stability, as indicated in the article. Freud might say that you assumed I was talking about you because you are subconsciously aware of your potential emotional instability.

:pimp:
Posted on Reply
#14
qubit
Overclocked quantum bit
by: theJesus
I was merely talking about the potential scientific and technological applications of a Qubit with improved stability, as indicated in the article. Freud might say that you assumed I was talking about you because you are subconsciously aware of your potential emotional instability.

:pimp:
Yes, lol. The pun was irresistible. My ego is too large, sometimes. :shadedshu
Posted on Reply
#15
sy5tem
so you are in a perpetual state of 0 and 1 at the same time , until "they" take mesurement ? qubits?
Posted on Reply
#16
qubit
Overclocked quantum bit
by: sy5tem
so you are in a perpetual state of 0 and 1 at the same time , until "they" take mesurement ? qubits?
Yes, I think so. No wait! No... :confused::confused: :laugh:
Posted on Reply
#17
n-ster
by: qubit
Yes, lol. The pun was irresistible. My ego is too large, sometimes. :shadedshu
Qubit are you married?

If you are than we have no hope, even qubits that are paired would still be unstable :cry:
Posted on Reply
#18
qubit
Overclocked quantum bit
by: n-ster
Qubit are you married?

If you are than we have no hope, even qubits that are paired would still be unstable :cry:
I'm on here so much, I think I must be married to TPU. :o:o
Posted on Reply
#19
Mussels
Moderprator
by: qubit
I'm on here so much, I think I must be married to TPU. :o:o
i KNEW that bitch of a forum was cheating on me.
Posted on Reply
#20
n-ster
by: Mussels
i KNEW that bitch of a forum was cheating on me.
You're the forum's sugar daddy :p She's so gold digging you :eek:
Posted on Reply
#21
theJesus
by: n-ster
You're the forum's sugar daddy :p She's so gold digging you :eek:
That would imply that Mussels has money :laugh:

btw Mussels, did you ever get that job?
Posted on Reply
#22
DanishDevil
by: Mussels
i KNEW that bitch of a forum was cheating on me.
It's that new filthy whore script that W1zz is running :shadedshu
Posted on Reply
#23
n-ster
by: theJesus
That would imply that Mussels has money :laugh:

btw Mussels, did you ever get that job?
For a forum, quality posts is as good as money :p
Posted on Reply
#24
theJesus
by: n-ster
For a forum, quality posts is as good as money :p
That would imply that he makes quality posts :roll:

*hides from banhammer*
Posted on Reply
#25
NAVI_Z
:roll::roll::roll::roll::roll:
Posted on Reply
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