Two atoms make quantum memory!

[Germshroom]

Now just saying you wont be having quantum memory in your PC any time soon but it is a step in the right direction.

 

 

 

Quantum systems are inherently fragile as any interactions with the outside world can change their state. That makes creating things like quantum memories rather challenging, since it can be hard to know if it actually preserves the information you put into it. To get around this, researchers have been looking into ways of creating error-correcting quantum memory.

 

 

 

 

In the two new papers, the researchers involved lay out the case for entangling different types of atoms. If you use the same types of atoms for memory and backup copies of the bits, then there's always a chance that a photon meant for the memory will scatter off it and hit one of the backups instead. If you use atoms from different elements, then they'll be sensitive to different wavelengths of light. Manipulating one will leave the other unaffected.

 

To me this seem like a step in the right direction. This looks good since this allows you to only influence parts of it instead of the whole thing.

 

 

The Oxford team went about this by using two different isotopes of calcium. A second team, from the National Institute of Standards and Technology and the University of Washington, used entirely different atoms (beryllium and magnesium). The calcium atoms could maintain their state for roughly a minute, while the beryllium atoms would hold state for a second and a half, making them somewhat stable in qubit terms.

 

We have a long way to go to making it last a long time but in this case calcium seems the way to go. But maybe we will find something more useful. and again as they said

 

 

 

Again, it's critical to recognize that these experiments are limited to demonstrations; they haven't built a working quantum computer, much less one that could perform useful calculations. What they have succeeded in doing is providing a potentially useful component that could be part of a useful quantum computer. And the more options we have for combining these components, the better the chance that we'll eventually be able to put something together.

 

Don't expect to have any of this at home sometime soon.

 

Read the full thing on ars for more info.

 

Source: http://arstechnica.com/science/2015/12/two-atoms-make-quantum-memory-processing-gate-and-test-of-entanglement/

[Darel321]

ehh.. we'll probably die before we see a real quantum computer

[ZetZet]

ehh.. we'll probably die before we see a real quantum computer

define real quantum computer

[Dabombinable]

define real quantum computer

Its components can be off and on at the same time....

[PlayStation 2]

Why do we need quantum memory

Like really, we barely improved on CPU performance in the last three years yet were researching how to make fucking theoretical types of memory

[cesrai]

Its components can be off and on at the same time....

But can they be at two places in same time ?

[LukaP]

Its components can be off and on at the same time....

not the right thinking. Its bits can be 1, 0 or a superposition of the two. can explain futher if you want.

 

Why do we need quantum memory

Like really, we barely improved on CPU performance in the last three years yet were researching how to make fucking theoretical types of memory

why did we need to research silicon transistors, i mean we barely were starting with electron tubes... Because technology takes time to develop, and not looking forward means you stagnate, which is never good. and literally every discovery in any branch of science will sooner or later be useful somewhere

[PlayStation 2]

not the right thinking. Its bits can be 1, 0 or a superposition of the two. can explain futher if you want.

 

why did we need to research silicon transistors, i mean we barely were starting with electron tubes... Because technology takes time to develop, and not looking forward means you stagnate, which is never good. and literally every discovery in any branch of science will sooner or later be useful somewhere

well I understand it needs to be developed but I sometimes wonder

[LukaP]

well I understand it needs to be developed but I sometimes wonder

NO! scientific developement is not something that should be left to wonder and decisions of yes vs no. we dont know what research will bring us. some seem irrelevant, others not so much, but if history shows anything, its that no research is useless in the long run. 

 

Did we need keplers laws ever really? no, we couldve done it all with newtons laws, but without it, the theory of relativity would be much harder to think of. and without relativity, no technology we rely on today would work at all

[Master Disaster]

Why do we need quantum memory

Like really, we barely improved on CPU performance in the last three years yet were researching how to make fucking theoretical types of memory

If everyone had this mentality we'd all still be living in caves, eating raw meat, sacrificing virgins and hiding when God takes the sun from the sky at night.

Some of the biggest discoveries ever made were not properly understood until years after they were made and in most cases the people who made the discoveries are forgotten while the people who realised how important the discovery actually was are remembered.

Science is sometimes a strange beast.

[blu4]

Its components can be off and on at the same time....

My sides

 

I see what you did there

[blu4]

If everyone had this mentality we'd all still be living in caves, eating raw meat, sacrificing virgins and hiding when God takes the sun from the sky at night.

Some of the biggest discoveries ever made were not properly understood until years after they were made and in most cases the people who made the discoveries are forgotten while the people who realised how important the discovery actually was are remembered.

Science is sometimes a strange beast.

If not for the religion dark ages we'd be using quantum computers...

[blu4]

But can they be at two places in same time ?

Yes, that's where the theory of parallel universes comes from.

[LukaP]

Yes, that's where the theory of parallel universes comes from.

nope, thats completly separate from the fact there are superpositions due to the uncertainty

[blu4]

nope, thats completly separate from the fact there are superpositions due to the uncertainty

Sorry, my bad. I though of something else.

[You_are_a_cunt]

When a mommy atom and a daddy atom love each other very very mu-... wait, what?

[Dobbsjr]

When a mommy atom and a daddy atom love each other very very mu-... wait, what?

Nuclear fusion happens.

[You_are_a_cunt]

Nuclear fusion happens.

[TheMidnightNarwhal]

invisible for night users, please fix

 

Just highlight it or change theme.

[Darel321]

define real quantum computer

a computer we wont even know what is doing.. thats a quantum computer

[Doobeedoo]

So much quantum discoveries lately

[PlayStation 2]

NO! scientific developement is not something that should be left to wonder and decisions of yes vs no. we dont know what research will bring us. some seem irrelevant, others not so much, but if history shows anything, its that no research is useless in the long run. 

 

Did we need keplers laws ever really? no, we couldve done it all with newtons laws, but without it, the theory of relativity would be much harder to think of. and without relativity, no technology we rely on today would work at all

"I sometimes wonder"

Keyword: I

Wow formatting is a bitch on iOS

[petem]

If everyone had this mentality we'd all still be living in caves, eating raw meat, sacrificing virgins and hiding when God takes the sun from the sky at night.

Some of the biggest discoveries ever made were not properly understood until years after they were made and in most cases the people who made the discoveries are forgotten while the people who realised how important the discovery actually was are remembered.

Science is sometimes a strange beast.

 

No! Sacrificing virgins was a new technology - we would not have embraced it if we were not forward-thinking! 

[WereCat]

not the right thinking. Its bits can be 1, 0 or a superposition of the two. can explain futher if you want.

why did we need to research silicon transistors, i mean we barely were starting with electron tubes... Because technology takes time to develop, and not looking forward means you stagnate, which is never good. and literally every discovery in any branch of science will sooner or later be useful somewhere

Or when the principle on which gravitational lensing is based on which Einstein previously thought will have no real measurable effects just to later find out that it has to be done on far greater scale to yield results. (Galaxies and clusters rather than stars).

[Arty]

Just highlight it or change theme.

or op

could

CNTRL SHIFT V paste

and not be inconsiderate.