Student creates world's largest quantum cluster

Nov 19, 2013

(Phys.org) —Australian National University PhD student Seiji Armstrong has made a quantum leap towards next-generation computing.

Working with a team in Tokyo, Seiji has created the largest cluster of quantum systems ever – a milestone on the way to super-powerful, super-fast quantum computers.

"The more you have in the cluster, the more powerful your quantum computer will be," he says.

"Previously the world record was 14. But in our experiment we went to more than 10,000 at once."

Each quantum system can encode a quantum 'bit' of information, like the binary system that a traditional computer uses, explains Seiji.

"In today's computers you have 'bits' of information – a bit is a 0 or a 1. A is similar but it can also exist in another state – instead of just a 0 or a 1 it can be in what's called a 'superposition'."

That's where it all starts to get a little complicated, but Seiji says it's easier if you think of quantum bits as coins.

"Imagine you have a coin and heads is 0 and tails is 1. When you flip it in the air it's as if the coin is both heads and tails at once. But, if you catch it and look at it, it will be either heads or tails.

"That's sort of how quantum bits work: you don't know what state they're going to be in until you measure them.

"When you arrange these quantum bits in a cluster, it opens up all the different possibilities and gives you access to this huge computational power."

Seiji says the potential applications of this research are endless.

"Eventually, we'll be able to use these quantum clusters to build quantum communication networks with very fast but also very secure and very powerful transmission lines," he says.

"In a normal computer, if you had 1,000 bits you might be able to solve a bunch of very easy problems. In a quantum computer with 1,000 quantum bits you'd be able to solve way more difficult problems – problems that classical computers can't solve."

Other applications might be so far advanced we can't even imagine them in today's world.

"Even when traditional computers had become commonplace, no one really saw the internet coming. So who knows where this will lead?"

The research was done while Seiji was at the University of Tokyo as part of a Prime Minister's Australia-Asia Award. Working with a group of experts headed by Professor Akira Furusawa was a pretty exceptional experience, he says.

"Everybody there had a unique skill and it was a really nice example of all these experts in their fields coming together. Everyone contributed to the experiment in a different way. It was really exciting stuff."

Explore further: New material for quantum computing discovered out of the blue

More information: Ultra-large-scale continuous-variable cluster states multiplexed in the time domain. Shota Yokoyama, Ryuji Ukai, Seiji C. Armstrong, Chanond Sornphiphatphong, Toshiyuki Kaji, Shigenari Suzuki, Jun-ichi Yoshikawa, Hidehiro Yonezawa, Nicolas C. Menicucci, Akira Furusawa. Nature Photonics (2013) DOI: 10.1038/nphoton.2013.287

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betterexists
1 / 5 (12) Nov 19, 2013
To me A Ceiling Fan Circling Around at the Roof comes to my mind;

Which Blade of the Fan is it?
Is it the Roof OR The Fan Blades??
TheGhostofOtto1923
1.6 / 5 (7) Nov 19, 2013
even when traditional computers had become commonplace, nobody saw the Internet coming
-Well sure they did. Why do you think PCs were promoted so heavily to begin with? The need to replace analog with digital was obvious, and the proliferation of mass-produced machines was essential for it's establishment.

The Internet was the CAUSE of the pc, not the EFFECT of it. One can revisit the history of hardware and software with this understanding in mind, and begin to appreciate how this was all Orchestrated to occur. The forced establishent of one common OS. The forced obsolescence of hardware. The forced standardization of components.

The artifice of the pc-vs-apple competition, in case a fatal flaw were to be discovered in either of them. This redundancy is SOP in miltech development, where the end result is so critical that it warrants such waste.

Computers were forced upon the world against it's will and for the Greater Good as was the railroads, the auto, the airlines, etc.
LastQuestion
1.4 / 5 (10) Nov 19, 2013
@TheGhostofOtto1923

I wish someone would force an R9 290X on me. Two would be nice.
Noumenon
1.7 / 5 (12) Nov 20, 2013
Orchestrated by whom, aliens? The most powerful government on the planet can't even manage the creation of one web site, despite three years and spending a near infinite amount of money, in web development terms.

I think you have out metaphysicised even religions with your ridiculous conspiracy theory. The entity that could have social-engineered all that to occur counter to what would have occurred by human seeking their own interest anyway, would certainly have been omnipotent in nature.
Noumenon
1.7 / 5 (12) Nov 20, 2013
... Let it be known that TheGhostofOtto1923 believes in Creationism and not natural evolution.
TheGhostofOtto1923
2 / 5 (4) Nov 20, 2013
You baiting me nou? Obamas website was sabotaged by insurers and conservatives both of whom abhor change and have much money to lose.

Nobody needed a pc when they first came out. It was much more expensive to computerize small businesses than not. Nobody was using CADD until the large corporations and govt agencies began insisting on it, and began paying enormous amounts of money to their consultants for it. It took more time, cost more money, and very few people knew how to use it.

Your free markets would never have allowed computerization because it wasn't going to become competitive for a very long time. And yet here we are today with a vast economic infrastructure which could not function without it.

The Internet could not have caught on if computers had not already become ubiquitous. Yet there they were waiting for something useful to do.

Major Constructs like worldwide abortion and the Internet cannot be happenstance. They are not an afterthought. The Way must be Prepared.
TheGhostofOtto1923
2 / 5 (4) Nov 20, 2013
Why do guys like yourself always ask 'who'? 'Who could possibly be capable of such a thing??' And yet you're easily convinced that one madman could commandeer one of the most powerful and educated countries in only a few short years, and threaten to conquer the world or destroy it. How is that possible from your perspective?

You're willing to entertain the notion that a liberal conspiracy has subverted the entire western world. Who orchestrated that nou?

There is a great deal that can be anticipated, simply because so much of the human condition is cyclic. Social and economic cycles driven by our tropical repro rate - growth, decay, collapse, rebirth - have always been inevitable. Collapse has ALWAYS meant war. And war has ALWAYS threatened to destroy civilization, and often did in the ancient world.

Given the inevitability of war, don't you think it is also inevitable that Leaders might begin colluding to preserve their rule by Managing it? You think the mafia invented this?
Noumenon
1.7 / 5 (12) Nov 20, 2013
Obamas website was sabotaged by insurers and conservatives both of whom abhor change and have much money to lose


LOL, you're conspiracies are delusional. It was "sabotaged" by the few people trying to use the site. The Obama administration has admitted it was not ready for primetime. They admitted it is a failure, so its broken nature is not a mystery. Also, the insurance companies love ObamaCare: did you know that if they don't make enough money within the first three years, they receive a bailout from the law?
Noumenon
1.7 / 5 (12) Nov 20, 2013
Your free markets would never have allowed computerization because it wasn't going to become competitive for a very long time.


It's as if you're just making up non-sense as you type. The entire pc industry started out of a guys garage,.... and from IBM, taping another potential market.

The Internet could not have caught on if computers had not already become ubiquitous.


Unbelievable. It's as if you consider the existing state of things and then without having an actual historic perspective you extrapolate retroactively how it would have happened had events emanated arbitrarily out of your ass.

The "internet" was conceptually Obvious, it is a natural extension of the computer, to link them together. Mainframes and mini-computers had dumb-terminals where dozens of users could work together within the same system / company / university, before PC's. There was BBS systems before the WWW. My first job was software dev of BBS for a small business, before the internet.
Noumenon
1.7 / 5 (12) Nov 20, 2013
Why do guys like yourself always ask 'who'? 'Who could possibly be capable of such a thing??' And yet you're easily convinced that one madman could commandeer one of the most powerful and educated countries in only a few short years, and threaten to conquer the world or destroy it. How is that possible from your perspective?

You're willing to entertain the notion that a liberal conspiracy has subverted the entire western world.


You fail to understand the libertarian position. The argument is not one of competence. It's about lack of competence and the dangers of unintended consequences. A conservative does not think any form of government is capable of improving the human condition, ...thus the advocation of a limited one. IOW, the fears of conservatives is not that 'liberals progressives' will succeed in planning out a utopian society, after all who wouldn't want that (?),.... the fear is when they inevitably fail and the cost to liberty of that failure.
Zephir_fan
Nov 20, 2013
This comment has been removed by a moderator.
TheGhostofOtto1923
2.3 / 5 (3) Nov 20, 2013
LOL, you're conspiracies are delusional. It was "sabotaged" by the few people trying to use the site
No, it was intrinsically flawed. Designed from scratch to be unworkable. But why dont you just argue with these guys?

"... calculated sabotage by Republicans at every step.

"That may sound like a left-wing conspiracy theory... But there is a strong factual basis for such a charge... Most Republican governors declined to create their own state insurance exchanges... congressional Republicans refused repeatedly to appropriate dedicated funds to do all that extra work"

-and...
TheGhostofOtto1923
2 / 5 (4) Nov 20, 2013
"AHIP the health insurance industry super lobby... were secretly funneling huge amounts money to the Chamber of Commerce to be spent on advertising designed to convince the public that the legislation should be defeated... A stunning $102.4 million... 15 months."

"... it was all about the Medical Loss Ratio (MLR)—the provision of the ACA that not only requires the health insurance companies to spend 80 percent of your premium dollars on actual health care expenditures, but further requires that they refund to their customers any amounts they fail to spend as required by the MLR... The total rebates... $1.1 billion for 2011 alone—clearly motivation for the insurers to defeat the law"

-But thats only one of the many reasons. The industry is stuffed full of lucre. One indication is the 2008 AIG collapse. Few structural changes have been made since. It is unable to accommodate an aging pop, pandemic, or AI and robotics which will soon make doctors obsolete. And so its being scrapped.
TheGhostofOtto1923
2.3 / 5 (3) Nov 20, 2013
A conservative does not think any form of government is capable of improving the human condition
No thats what an anarchist thinks. Youre not an anarchist are you?
Unbelievable. It's as if you consider the existing state of things and then without having an actual historic perspective
But I have an actual historical perspective. Mine just happens to make sense.
you extrapolate retroactively how it would have happened
This is commonly called forensics.
had events emanated arbitrarily out of your ass.
My ass has nothing to do with world events.
The entire pc industry started out of a guys garage,.... and from IBM
Yah and how could one possibly become the other?

Mega-scale Constructs like the Internet and the transformation from analog to digital, CANNOT BE incidental and unintended results of anything.

The digital age was ANTICIPATED by turing and others. It was obviously VITAL to the future. It was MADE to happen. It did NOT happen by itself.
Noumenon
1.7 / 5 (12) Nov 20, 2013
My first job was software dev of BBS for a small business, before the internet.


Well Skippy, from the silly things you post you sound like that has been your only job. Changing the typewriter ribbons and stocking the paper closet. But I agree with your being qualified be a junior member of the BS department, even though your chances of advancement aren't looking to good.


"Skippy"? Is that your lame attempt at talking down to people?

It's easier to type in Jerry-Springer ad-hominems, than counter arguments isn't it.

I have yet to see your new screen name post a single thing of substance.
Zephir_fan
Nov 20, 2013
This comment has been removed by a moderator.
Noumenon
1.7 / 5 (12) Nov 20, 2013
A conservative does not think any form of government is capable of improving the human condition....

No thats what an anarchist thinks. Youre not an anarchist are you?


Did you deliberately cut off the end of that sentence so you could make that false charge? Here is the rest of my sentence,... ".....thus the advocation of a limited one [gov]."

An anarchist would advocate NO government. Conservatives are strong advocates of several branches of government.

Mega-scale Constructs like the Internet and the transformation from analog to digital, CANNOT BE incidental and unintended results of anything.


Of course I never mentioned it was a random event. Do you have any idea how much profit is made off of the internet? How's that for natural motivation?
Noumenon
1.7 / 5 (12) Nov 20, 2013
The digital age was ANTICIPATED by turing and others. It was obviously VITAL to the future. It was MADE to happen. It did NOT happen by itself.


Yes, as I mentioned above the direction of some tech is obvious, so what? It comes about on a massive scale because of the potential for profit,.... not some secret omnipotent social engineering governmental committee.
Noumenon
1.7 / 5 (12) Nov 20, 2013
It's easier to type in Jerry-Springer ad-hominems, than counter arguments isn't it.


Considering that you were too stupid to answer to my epistemology question I figured that stupid was the only thing you could understand. Were you lying then? Or are you lying now? Oh, okay you were lying then and now. Go SIT DOWN and SHUT UP. Let the smart people try to teach you something. Do you like it when the Ira slaps you Skippy? Good, I need the exercise anyway.


OK, I have a feeling I'm dealing with a teenager here. What question did you ask?
Noumenon
1.7 / 5 (12) Nov 20, 2013
@GhostOfOtto1923, ... I'm not surprised that you would fall for the notion that republicans are some how responsible for the ObamaCare debacle,.... despite their stated position all along that IT WOULD NOT WORK,... If the Obama administration is so stupid as to rely on those opposed to the monstrosity to ensure its success, then there you go.
TheGhostofOtto1923
1 / 5 (4) Nov 20, 2013
A conservative does not think any form of government is capable of improving the human condition, ...thus the advocation of a limited one
-So by the rules of philo word calculating, you are saying that
Conservatives are strong advocates of several branches of government
-despite the inability of any of them to improve the human condition. That is at least clumsy. Why do we have even the ones you favor if NONE of them can improve the human condition?
Do you have any idea how much profit is made off of the internet?
Not possible without PCs which had reached a certain threshold of capability. This level was not reached because they were intrinsically profitable. They were mostly a waste of money for anything but entertainment. They would not have caught on UNLESS govt and the large corporations had paid enormous amounts of money to support them, and require that their consultants all use them.

Without this seed money nobody in business would have used them.
TheGhostofOtto1923
2.3 / 5 (3) Nov 20, 2013
@GhostOfOtto1923, ... I'm not surprised that you would fall for the notion that republicans are some how responsible for the ObamaCare debacle,.... despite their stated position all along that IT WOULD NOT WORK,... If the Obama administration is so stupid as to rely on those opposed to the monstrosity to ensure its success, then there you go.
See my above posts on some of the ways they sabotaged it. What makes YOU think it wont work?

It WILL work. Its a matter of national security. The industry will not be allowed to leave itself vulnerable to collapse by refusing to change. Obamacare is inevitable just like social security was.

Look at what it took to eliminate the southern slave culture. That wasnt going to change by itself either even though it wasnt going to be able to compete with industries which were embracing automation.

So it was destroyed in the Only Way possible. Urban renewal if you will.
Noumenon
1.4 / 5 (11) Nov 20, 2013
A conservative does not think any form of government is capable of improving the human condition, ...thus the advocation of a limited one
-So by the rules of philo word calculating, you are saying that
Conservatives are strong advocates of several branches of government
-despite the inability of any of them to improve the human condition. That is at least clumsy. Why do we have even the ones you favor if NONE of them can improve the human condition?


Do you not understand the difference between "form of government", and "branches
of government"?
TheGhostofOtto1923
3 / 5 (2) Nov 20, 2013
So which form of govt is it that has branches you strongly advocate for, if NONE of these forms can improve the human condition? Try making sense this time please.
Zephir_fan
Nov 20, 2013
This comment has been removed by a moderator.
Zephir_fan
Nov 20, 2013
This comment has been removed by a moderator.
Zephir_fan
Nov 20, 2013
This comment has been removed by a moderator.
Noumenon
1.4 / 5 (11) Nov 20, 2013
@Zephir_fan, -It is of no concern to me that you believe me wrt Esteven57's deleted post. - I've been a member since 2007 & have never stated I was "leaving". -based on your above posts, it appears that you are 'very young' and have only an interest in Jerry-Springer type trolling, and so it would not interest me to engage you further. No offense.

@Ghost, IOW government in general, is not efficient nor effective as a force for economic and societal progress. So even if republicans controlled the white house and congress in the USA, I would still advocate limited gov, because they would not have any better rational for increasing government control at the expense of liberty. Branches of gov that are necessary for protection of citizens, private property, and infrastructure.,... justice system, military.
Zephir_fan
Nov 20, 2013
This comment has been removed by a moderator.
Noumenon
1.4 / 5 (11) Nov 20, 2013
I've been posting since 2007, so there is plenty of evidence; google 'site:phys.org noumenon' knock yourself out, "skippy", or continue thinking whatever you want. You never asked a coherent question in context of a substantive discussion. Plus, it is clear you're a troll and mentally young.
Zephir_fan
Nov 20, 2013
This comment has been removed by a moderator.
Noumenon
1 / 5 (9) Nov 21, 2013
I'm calling you a troll because you're calling people "skippy" in an moronic attempt to talk down to people. Once you drop the Jerry-Springer argument style, ad-hominem arguments, and post for sometime as if you actually appear interested in a subject rather than using that sibject as a vehicle for pointless argument,.... then I may eventually respond,... othereise it is pointless to engage in your type.
Eoprime
1.5 / 5 (8) Nov 21, 2013
Is it me or is there exactly zero information in this article?
(ignoring usual rant in comments)