Electron transfer paves way for quantum computing

Electron transfer paves way for quantum computing

www.cosmosmagazine.com

NEW YORK: By isolating and repeatedly transporting a single, trapped electron from one point on a wire to another, two independent teams of quantum physicists have completed the first major step towards building a quantum computer.

While still in their infancy, quantum computers have the potential to be highly powerful machines, capable of solving certain complex problems much faster than classical computers.

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Quantum leap towards computer of the future

Quantum dots essential

To build a quantum computer, you cannot use transistors, the building blocks of traditional computers. Instead, a new technology is required to transport and allow interactions between qubits.

Putting the pieces together

"[We] put all the individual components together," said Robert McNeil, a co-author and graduate student from the Cambridge team.

Both groups isolated a single electron from among a cluster of electrons, trapped it in a quantum dot and successfully transported this same electron, using sound waves, into a second quantum dot.

The completion of this experiment showed for the first time that the quantum dot technology could work correctly.

Electron movement key

Manipulating individual electrons to move over rapid time scales and large distances is important for the functioning of a quantum computer. "If you get a series of individual pairs of [electrons] to interact, they become entangled with each other," said McNeil. "And that is what allows quantum computers to be so powerful."

www.cosmosmagazine.com
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This is the coolest news that I heard since... well, I can't really think of anything that tops this. Thanks for posting something "positive" to read about on ATS

I have one tied. That's Rossi's LENR E-Cat, but this is an amazing leap also.

reply to post by Freedom_is_Slavery


Important advancement.

An important question then is will the psychopaths be able to turn this into an even bigger bomb?

reply to post by Freedom_is_Slavery


Appears these guys are too late. Lockhead Martin bought the first produced quantum computer for $10 million.

venturebeat.com...

Originally posted by TerryMcGuire
reply to post by Freedom_is_Slavery

 

Important advancement.

An important question then is will the psychopaths be able to turn this into an even bigger bomb?

No, it is a computer. Well, it is the early design for a small part of a future computer.

Did you mean can they use the computer to build a bomb? Duh!

Brilliant experiment. I have been keeping an eye on quantum computing for ages. Nice to see they have got past another stage in the puzle.

reply to post by consciousgod


To the dept. 'O defense... go figure

Originally posted by consciousgod
reply to post by Freedom_is_Slavery

 

Appears these guys are too late. Lockhead Martin bought the first produced quantum computer for $10 million.

venturebeat.com...

Interesting although

Criticism

D-Wave has been heavily criticized by some scientists in the quantum computing field.

According to Scott Aaronson, a Computer Science professor at MIT who specializes in the theory of quantum computing, D-Wave's demonstration did not prove anything about the workings of the computer.

He claimed a useful quantum computer would require a huge breakthrough in physics, which has not been published or shared with the physics community.

Dr. Aaronson has maintained or updated his criticisms on his blog.

Umesh Vazirani, a professor at UC Berkeley and one of the founders of quantum complexity theory, made the following criticism:

"Their claimed speedup over classical algorithms appears to be based on a misunderstanding of a paper my colleagues van Dam, Mosca and I wrote on "The power of adiabatic quantum computing." That speed up unfortunately does not hold in the setting at hand,
and therefore D-Wave's "quantum computer" even if it turns out to be a true quantum computer, and even if it can be scaled to thousands of qubits, would likely not be more powerful than a cell phone."

Wim van Dam, a professor at UC Santa Barbara, summarized the current scientific community consensus in the journal Nature:

"At the moment it is impossible to say if D-Wave's quantum computer is intrinsically equivalent to a classical computer or not. So until more is known about their error rates, caveat emptor "Let the buyer beware" is the least one can say."

D-Wave_Systems[

Yeah the quantum computer is awesome, as long as you don't think about it... Thinking about the computer while it's computing affects the results of the computation.

Kewl HUH?

reply to post by hudsonhawk69


bizarre..
Almost as if they know they are being watched...

Though i might as well post a link to the video (What the bleep do we know) for anyone that wants to learn a little about quantum physics this is a very easy to understand presentation,
this is the whole movie about two hours but worth it..

Originally posted by Shamatt

Originally posted by TerryMcGuire
reply to post by Freedom_is_Slavery

 

Important advancement.

An important question then is will the psychopaths be able to turn this into an even bigger bomb?

No, it is a computer. Well, it is the early design for a small part of a future computer.

Did you mean can they use the computer to build a bomb? Duh!

Brilliant experiment. I have been keeping an eye on quantum computing for ages. Nice to see they have got past another stage in the puzle.

That was a rhetorical question posed as a statement on the overall use of scientific discoveries and the historical tendency to take any and all advances and use them for ill.

reply to post by TerryMcGuire


I like the example of Eisenhower. When he started in the military they were still using muskets and by the end of his career they had invented the A-Bomb. Ahhh... Progress...

reply to post by Freedom_is_Slavery



This is monumental.

All computers are designed around logical circuits. These are comprised of Gates which are constructed of Transistors.
As in And Gate or OR Gate, the foundation to computer logic and design.

All transistor based gates have what is called an inherent propagation delay.
This is the time required for each transistor to "latch" or change state in a logic gate once it is provided an input voltage/current.

By eliminating this delay as well as the savings in energy/power requirements, the sky is the the limit as far as the power of computers is concerned.

For it's always been the limitations in hardware than those of software that limits us as far as processing power is concerned.

PEACE

Since quantum computers use entanglement and superposition, then we should now be receiving messages from ourselves from the future.

What messages could we receive?

Cures for disease?
Warnings of catastrophe?
Blueprints for technology?
Stock tips?

All the above?

And I am sure the information will be used against us all and we won't even know it.

Minority Report?

Pre-crime?

Remaking time, one illusion at a time.