Dwave Quantum Computing

[SansVarnic]

I know this vid is a little over a year old but I found it interesting to say the least. They mention in the video it impossible to reach absolute zero but I read in a science journal not long ago they were able to reach a few millionths of a degree past absolute zero which is another topic altogether of course.

 

Enjoy (if you can follow along and you interested in this sort of thing)  B)

 

[niofalpha]

The way this documentary is done is so funny

[bob345]

I know this vid is a little over a year old but I found it interesting to say the least. They mention in the video it impossible to reach absolute zero but I read in a science journal not long ago they were able to reach a few millionths of a degree past absolute zero which is another topic altogether of course.

Enjoy (if you can follow along and you interested in this sort of thing)  B)

it is impossible. We are able to get within a few millionths of a degree from absolute zero, but not below.

[Guest]

At a programming class meeting thing I didn't end up enrolling in one of the guys used python to program a quantum computer

[CommandMan7]

the concept of past absolute zero doesn't make any sense. When heat is movement, and there is no movement, there cannot be negative movement.

[SansVarnic]

it is impossible. We are able to get within a few millionths of a degree from absolute zero, but not below.

I will have to find the article and post it I guess but I was just mentioning it along with this as I found it interesting to note that they believe that 1. either they need to re-define the kelvin scale or 2. they found another state of the how the atom acts at the temperature reached.

I find this stuff rather fascinating.

 

*edit*

Found some of the articles referring to lower than absolute zero.

http://www.livescience.com/25959-atoms-colder-than-absolute-zero.html

http://www.nature.com/news/quantum-gas-goes-below-absolute-zero-1.12146

http://www.mpg.de/6776082/negative_absolute_temperature

 

This the quote I was able to find that I read originally it in the third link. 

“The inverted Boltzmann distribution is the hallmark of negative absolute temperature; and this is what we have achieved,” says Ulrich Schneider. “Yet the gas is not colder than zero kelvin, but hotter,” as the physicist explains: “It is even hotter than at any positive temperature – the temperature scale simply does not end at infinity, but jumps to negative values instead.” -Prof. Dr. Immanuel Bloch

 

https://van.physics.illinois.edu/qa/listing.php?id=17041-link to answer your statement of being impossible, I guess.

 

I cannot debate on this as I just read the articles and can only comment on what I see, the research is there so you will have to make your own decisions based on it. Enjoy   

Edited June 8, 2015 by SansVarnic

[Toxicable]

D wave systems have made the Dwave 2 - with 512 qbits (the first Dwave was 128 qbit for reference). Only 6? have been sold for about $10 000(rumored) each.
They are currently working on the Dwave 3 which will have something like 2000 Qbits I think it is.

[bob345]

I will have to find the article and post it I guess but I was just mentioning it along with this as I found it interesting to note that they believe that 1. either they need to re-define the kelvin scale or 2. they found another state of the how the atom acts at the temperature reached.

I find this stuff rather fascinating.

 

*edit*

Found some of the articles referring to lower than absolute zero.

http://www.livescience.com/25959-atoms-colder-than-absolute-zero.html

http://www.nature.com/news/quantum-gas-goes-below-absolute-zero-1.12146

http://www.mpg.de/6776082/negative_absolute_temperature

 

This the quote I was able to find that I read originally it in the third link. 

“The inverted Boltzmann distribution is the hallmark of negative absolute temperature; and this is what we have achieved,” says Ulrich Schneider. “Yet the gas is not colder than zero kelvin, but hotter,” as the physicist explains: “It is even hotter than at any positive temperature – the temperature scale simply does not end at infinity, but jumps to negative values instead.” -Prof. Dr. Immanuel Bloch

 

https://van.physics.illinois.edu/qa/listing.php?id=17041-link to answer your statement of being impossible, I guess.

 

I cannot debate on this as I just read the articles and can only comment on what I see, the research is there so you will have to make your own decisions based on it. Enjoy   

ehh, yeah ive read those articles where they are dealing with entropy. They are kind of just click bait articles really. In reality, its mostly a fancy twisting of words and the temperature being reached is no different than when measured normally. Here is a quote that should give you an idea about what is actually happening

 

 

Q. If you call a bulldog a collie, and you have two collies and a bulldog, how many collies do you have?

A. Three.

Response: No, two. Calling a bulldog a collie doesn't make it one.

In the same fashion, calling "entropy" "temperature" doesn't make it so. Two related concepts, like two related animals, still aren't the same.