How fast do quantum interactions happen? Faster than light, 10,000 times faster.

That's what a team of physicists led by Juan Yin at the University of Science and Technology of China in Shanghai found in an experiment involving entangled photons, or photons that remain intimately connected, even when separated by vast distances.They wanted to see what would happen if you tried assigning a speed to what Einstein called "spooky action at a distance."

They didn't find anything unexpected, but that wasn't the point: in physics, sometimes it's good to be sure. The group published their work on the ArXiv.org, a preprint server for physics papers.



Quantum physicists have long known that after two particles — photons, for example — interact, they sometimes become "entangled." This kind of experiment has been repeated many times, and involves taking two entangled photons and sending them to different places. Perhaps photon A goes to Los Angeles and photon B goes to Boston.

When photon A is observed, it has a certain polarization, perhaps "up." The other photon in Boston is always in the opposite polarization, "down." No matter what measurement is made of photon A, photon B will always be opposite. It is impossible to tell what the polarization will be before you measure it, but the entangled photons always seem to "know" the right state to be in, instantaneously. [Twisted Physics: 7 Mind-Blowing Findings]

As Chad Orzel, assistant professor of physics at Union College, explained, "It's as though you sent two cards to two different addresses. One might be the jack of diamonds and the other the ace of hearts. When you get the card at one address you know which one went to the other. Quantum mechanics is weird because until you open the envelope, saying which card it is doesn't have any meaning; it could be either one."

Speed of quantum interaction

This is what Albert Einstein called "spooky action at a distance." And the correlation between the photons' states seems to happen instantaneously. But what does "instantaneous" really mean? That's part of what the Chinese team wanted to look at.

So the researchers entangled two photons and sent them to two different stations about 10 miles (16 kilometers) apart. In their ArXiv paper, the scientists said that previous experiments had "locality loopholes," which is another way of saying that it's possible to explain the link between photons with something other than the "action at a distance."

The group measured the state of one photon and timed how long the entangled state took to show up in the other. They found that the slowest possible speed for quantum interactions is 10,000 times the speed of light — assuming your experiment is moving relatively slowly, at least relative to light beams.

Whereas the result may sound like a way to send faster-than-light messages, it isn't, really, because you can't know the state of the entangled photon pair before it's measured; so there's no way to control it and make the photon at the other end take on certain states and use it like a Morse code telegraph. [10 Implications of Faster-Than-Light Travel]

This type of experiment has been done before, notably by a European team, in 2008. So why do it again? Many physics experiments are performed to check more closely the values of constants used in equations, for instance, which enable more precise measurements in other areas.

Orzel said that even if it turned out that there was some small amount of time it takes for the state of a photon to change (meaning it's not instantaneous), it isn't clear that lag would mean much for quantum physics generally. That's because there are several interpretations for why quantum phenomena happen the way they do, and all explain the experimental results equally well. Physicists aren't even certain that there's an experiment one could do to tell the difference.

He added that it is extremely unlikely that anyone will ever get an "exact" value for the speed of such quantum interactions, and, in fact, modern physics prohibits that kind of finding in principle. But it is useful to see what the limits are — to clarify what we mean when we say "instantaneous."

"There's a certain strain of physics that people that will say it has to be instantaneous – in fact, if it is faster than light it must be instantaneous," Orzel said. "So if you can put a limit on it that is kind of cool."

That's ludicrous.

What was the question again?

No, seriously, I know the answer but it involves the non existence of spacetime and the fact that light has no speed, we just think it does.

Actually the speed of light is 299,792,458 m/sec. It is not hard
to measure and spacetime exists.

Entangled photons exits too and their polarizations are linked
but they do not communicate so there is no contradiction with the
speed of light.

Once they are entangled, they have opposite polarizations that is
all. It is like if you take a penny and press it into some clay.
The clay retains a negative image of the penny showing Lincoln's
head. If you take the clay to New York and the penny to Los
Angeles the clay will still have a negative image of the penny.

Except it is with photons.

the only difference is that the clay doesn't move when the penny moves... the protons do

so,how come our Radio-Communications,and anything else depending the Speed Of Light works?
In the Formula to convert Frequency to Wavelength,the Speed of Light figures prominently!

http://www.qrg.northwestern.edu/projects/vss/docs/communications/2-how-are-frequency-and-wavelength-related.html

almost, there is no such thing as time... light moves, time doesn't...

The true nature of light is that it has no speed.

Time (as an entity) does not exist.

Since time and space are intimately related, spacetime does not exist.

Matter does not exist either.

The Higgs bosen, which is supposed to be a particle of matter and the building block of matter, does not exist as matter.

Everything is just vibration and energy in different forms.

This reality is in more illusion than real. What we see and feel are interpretations and reflections of the mind.


Reality is merely an illusion, albeit a very persistent one.

Albert Einstein



"A thing is real only because we decide it is real."

explain to me then,how you compute the Length of an Antenna,if Lightspeed is Zero?
You make all these assertions,but as usual,provide no proof!

What is the speed of water?

It depends on ..................what?

Does water have a speed?

explain to me how Radiocommunications work with Speed of Light being Zero!
Actually you can't!
Or how you think a Nuclear Device works with the Speed of Light being Zero!
BTW,you still haven't explained a thing!

Actually,nothing Electronic or Electrical would work with the Speed of Light being Zero!

For thousands of years sages and mystics have been telling us that time is an illusion.

Recently scientists discovered that at levels below Planck Time, even the concept of time drops off the scientific agenda.

As an objective cosmic reality, time literally does not exist.

If this fact is accepted it has to follow that spacetime does not exist and matter does not exist because all of these things are inter connected.

But it is hard to swallow because to us, they all seem quite real and we say they exist. Therefore we need to re visit and reexamine the nature of reality itself, and perhaps redefine what it means to "exist."

Does something exist because we can feel it, touch it and see it and measure it?

Can a hypnotist convince a person that a table exists to the point where he can feel it, touch it and see it? We know he can. So where is this table? How is it created? It is created and exists in the mind of the hypnotist's subject.

That is how we, as a group human consciousness, or group mind create this reality. We can see it, touch it, feel it, measure it.

But does it exist? Not really... it only exists in the group mind.

Albert Einstein said it:

Reality is merely an illusion, albeit a very persistent one.

Since time does not exist, then space (spacetime) does not exist. Matter does not exist.

Therefore with no space, light cannot "travel through it." There is nothing to travel through. Therefore, light has no speed.

If you begin with this premise, then you have to stop thinking in terms of what you think you know about light having speed and try to figure out why light appears to have speed.

Also, when you begin with the premise that light has no speed and there is no space to travel through, then the "spooky action at a distance" does not even need to be explained. There is no "distance."

In your dreams, does space actually exist? In your dreams, do objects (matter) actually exist? Yet you can see and feel and walk across a field in your dreams, and you can see mountains and buildings and people. Where do these things exist?

They are in your mind.

where is your proof?

Proof, even if it came from Albert Einstein, (who knows what I am saying is true,) would not help you to understand.

The proof is there in Quantum mechanics, but very few people can grasp what that says about reality.

in your Universe,nothing Electrical would work!
Still,you haven't provided any proof ,only some assertions!
And you also feel quite comfortable with Equations in which one of the Factors is Zero?

They are not assertions.

Like I said, the proof is in the quantum mechanics. "Spooky action at a distance."

which has nothing to do with the Speed of Light!
According to you,everything can work in the absence of the Speed of Light,yet electrical engineering proves that isn't so!