Single-particle ‘spooky action at a distance’ finally demonstrated

[patrick3027]

http://www.sciencealert.com/spooky-action-at-a-distance-in-a-single-particle-has-been-demonstrated-for-the-first-time

 

Spooky action at a distance, or quantum entanglement, in a single particle is a strange form of entanglement that could greatly help to improve quantum computing and communications. Unlike regular quantum entanglement, which involves two particles being defined only by being opposites of each other, single particles that are entangled have a wave function that's spread over huge distances, but are never actually in more than one place.

 

[...]

 

Publishing in Nature Communications, the team describe how they managed to split a single photon between their labs in Australia and Japan. They then showed that their choice of measurement in one laboratory really did cause a change in the local quantum state in the other lab - proving Einstein wrong almost 90 years after he first declared that single-particle entanglement was evidence that quantum mechanics didn't work.

 

 

Is it science? Is it black magic? I don't know but it sounds cool

[Mitrailleuse]

[Norman_the_Owl]

...Spooky particle? Is that a scientific term? Really?

[Guest Kloaked]

I thought this was going to be some weird new game effect.

[Tonylu1595]

...Spooky particle? Is that a scientific term? Really?

Yes. It is.

 

Actually it's just a quote from Einstein.

[squid4fl]

I understand the topic but in my opinion thats not really news for this forum. No offense but its more hardcore physics stuff

[Guest]

A particle demonstrating a weird, inexplicable connection... with itself.

OK, quantum physics has officially gone too far. It needs to stop.

[euniqe]

I understand the topic but in my opinion thats not really news for this forum. No offense but its more hardcore physics stuff

 

It's a stepping stone to quantum computing.

[SteveGrabowski]

...Spooky particle? Is that a scientific term? Really?

 

I don't understand the topic, but yeah, spooky action really is a scientific term.  :lol:

[Lazmarr]

So if I'm not mistaken, one lab in Australia had split a particle and sent  it to another lab in Japan whereby it changed?

[Tygron]

So it's not movement that's transferred but other things? Because if you move out to the other facility... How would you keep the other in place. In fact how do you move a particle anyway?

[Albatross]

I don't understand so "spooky particle" matches perfect in my opinion. :lol:

[Trik'Stari]

I barely understand this, which is normal I supposed since I don't have a degree in physics, but I understand that if harnessed, it could.....really fucking change things. If it could be harnessed to an extreme extent, imagine internet with 0 latency....across the globe.

 

I summon @LukaP, to save us all from our ignorance of quantum mechanics and physics in general. Please, save us filthy mortals.

 

 

So if I'm not mistaken, one lab in Australia had split a particle and sent  it to another lab in Japan whereby it changed?

 

Apply, or change the state of one particle(lets say from positive to negative), and the state of the other particle changes instantaneously, regardless of distance. Literally, instant, as in at the exact same moment in time, theoretically faster than light can travel (I think, could be wrong there, although technically information can travel faster than light if I remember correctly.)

[Bsmith]

how the fk did those guys catch a photon?

last time i checked these things couldn't be watched because of their speed and the particle/wave condition they have.

It's awesome they did this and they found out einstein was wrong(which Bohr already predicted/claimed/said) but is was to be expected, since einstein could only bust this thing by forgetting about it's own relativity theory.

[Sidiox]

I barely understand this, which is normal I supposed since I don't have a degree in physics, but I understand that if harnessed, it could.....really fucking change things. If it could be harnessed to an extreme extent, imagine internet with 0 latency....across the globe.

I summon @LukaP, to save us all from our ignorance of quantum mechanics and physics in general. Please, save us filthy mortals.

Apply, or change the state of one particle(lets say from positive to negative), and the state of the other particle changes instantaneously, regardless of distance. Literally, instant, as in at the exact same moment in time, theoretically faster than light can travel (I think, could be wrong there, although technically information can travel faster than light if I remember correctly.)

you are thinking about normal quantum entanglement. This is single particle stuff,which is even weirder and I don't quite understand stand it

[Trik'Stari]

you are thinking about normal quantum entanglement. This is single particle stuff,which is even weirder and I don't quite understand stand it

oh....weird

[LukaP]

I barely understand this, which is normal I supposed since I don't have a degree in physics, but I understand that if harnessed, it could.....really fucking change things. If it could be harnessed to an extreme extent, imagine internet with 0 latency....across the globe.

 

I summon @LukaP, to save us all from our ignorance of quantum mechanics and physics in general. Please, save us filthy mortals.

 

Information cannot travel faster than c. that is a law.

 

To quote wiki, since im lazy and the article is trustworthy

 

 

The seeming paradox here is that a measurement made on either of the particles apparently collapses the state of the entire entangled system—and does so instantaneously, before any information about the measurement could have reached the other particle (assuming that information cannot travel faster than light). In the quantum formalism, the result of a spin measurement on one of the particles is a collapse into a state in which each particle has a definite spin (either up or down) along the axis of measurement. The outcome is taken to be random, with each possibility having a probability of 50%. However, if both spins are measured along the same axis, they are found to be anti-correlated. This means that the random outcome of the measurement made on one particle seems to have been transmitted to the other, so that it can make the "right choice" when it is measured. The distance and timing of the measurements can be chosen so as to make the interval between the two measurements spacelike, i.e. from any of the two measuring events to the other a message would have to travel faster than light. Then, according to the principles of special relativity, it is not in fact possible for any information to travel between two such measuring events—it is not even possible to say which of the measurements came first, as this would depend on the inertial system of the observer. Therefore the correlation between the two measurements cannot appropriately be explained as one measurement determining the other: different observers would disagree about the role of cause and effect.

[Trik'Stari]

Information cannot travel faster than c. that is a law.

 

To quote wiki, since im lazy and the article is trustworthy

oh....so no quantum speed internet? DAMN YOU PHYSICS!

 

So...how do they even entangle stuff like this? I assume it's extraordinarily complicated. *tried to read wiki about it....still don't fully comprehend it* Quantum mechanics is a bitch.

[squid4fl]

By the way, Veritasium explains the phenomenon pretty well: 

[spartaman64]

Einstein: 2 spooky 4 me

[Guest Strangerbob]

Information cannot travel faster than c. that is a law.

 

To quote wiki, since im lazy and the article is trustworthy

 

Thats not very scientific and open minded...  remember, once it was LAW that the Earth was flat, and it was obvious to EVERYONE

 

Maybe there are speeds way faster than light speed, just not for anything that has mass or is part of the electromagnetic spectrum?