1. nikita_isaev says:

Yes, it can. Information has no mass, and therefore can move at or above the speed of light.

Example:�

If the Sun suddenly (in an unknown way) disappears, the Earth will stop rotating in its orbit instantly, and not after 8 minutes.�

Another example:

For example, we have 2 shoes (yes, you read it correctly – shoes) – left and right.

Let's mix them up and put them in a box in strict secrecy and deal with the person who put the shoe. Now no one knows which shoe is in the drawer.

We will send another shoe (let it be the right one, but no one knows about it), at a distance of several billion kilometers from Earth. From there, even at the speed of light, you can fly for several hours.

Now we wait for several decades, and when the right shoe has flown away into the unknown (but no one knew where the right one is and where the left one is), we let one person open the box. Opening the box, he sees that the left shoe is in it and instantly, faster than the speed of light, information reaches him about the “rightness” of the shoe that we sent into space a few years earlier.

2. alexander_mynov says:

Yes, entangled photons interact faster than the speed of light. In addition, scientists have long established that in humans, the brain detects pain and prepares for it even before the signal reaches the nerves. I.e., the brain picks up the very wave diverging along the time continuum like ripples on water. Time as the river flows and only strong “circles” reach the past, but for the brain, what is happening inside the body is just an important event – we hit the subject on the finger, he does not know about it in advance and does not see anything, and the sensors on the brain show a reaction faster than the signal from the finger to the brain could reach, it turns out

3. alexey_ustimenko says:

Can not. Not through quantum entanglement. No way. This is prevented by the SRT.

The top comment is from a person who heard the ringing but doesn't know where it is.

To transmit information through a quantum channel, you also need a classical channel, so that the transmitting side can tell you its own basis in which measurements are made.

A simple measurement of entangled qubits does not transmit information, information is transmitted by a combination of a classical communication channel and a quantum one, whose speed does not exceed the speed of light.

4. name says:

No, I don't think you can transmit information at this speed.
Physics says that nothing can exceed the speed of light, although there are cases that refute this judgment.

5. konstantin_o says:

In fact, the transmission of information at a speed greater than the speed of light is possible (at least theoretically) and without quantum effects. Imagine a very large guillotine in which the angle between the upper and lower blades is very small. If the upper blade is properly accelerated, the point of contact between the upper and lower blades can move faster than the speed of light. Yes, it is not material, but the information is transmitted. At least about the movement of the blade.

6. konstantin_belan says:

Theoretically, it can.

In our universe, there are particles that, regardless of the distance between them, have a quantum relationship. So knowing the spin (rotation characteristic) of one particle, we can judge the spin of another.

Initially, we cannot know the spin of a particle, and the particle itself is in a state of quantum entanglement. But as soon as we begin to observe a particle, and specifically measure its spin: it immediately begins to rotate strictly in one direction, and instantly (just instantly, that is, at an infinite speed) transmits information about its rotation to another particle with which it is in a quantum relationship. The distance between the particles does not matter here, even a few nanometers, even a few million light-years: the other particle will immediately begin to rotate in the opposite direction.

That is, by setting the direction of rotation of such particles, we can exchange information instantly, regardless of the distance.

The question is very complex, but at the same time interesting. The difficulty lies in finding such particles and in having very precise spin measurement equipment. In addition, it is necessary to somehow transmit information that the rotation of the particle was set “at the other end”.

The prospects for this technology are truly broad. And if we want to colonize the universe, search for new planets and our “brothers in mind”, then we definitely can't do without quantum communication due to the very huge distances in the universe.

But scientists do not stand still and move science forward. In 100 years, quantum communication will become as commonplace as regular cellular communication, and your great-great-grandchildren will be talking to their relatives on the other side of the universe even ” without noticing it.”