Source: http://arxiv.org/abs/0808.3316... Here we put stringent experimental bounds on the speed of all such hypothetical influences. We performed a Bell test during more than 24 hours between two villages separated by 18 km and approximately east-west oriented, with the source located precisely in the middle. We continuously observed 2-photon interferences well above the Bell inequality threshold. Taking advantage of the Earth's rotation, the configuration of our experiment allowed us to determine, for any hypothetically privileged frame, a lower bound for the speed of this spooky influence. For instance, if such a privileged reference frame exists and is such that the Earth's speed in this frame is less than 10^-3 that of the speed of light, then the speed of this spooky influence would have to exceed that of light by at least 4 orders of magnitude.
Atran said:Hi,
Source: http://arxiv.org/abs/0808.3316
I haven't studied more than the basics in QM. Therefore I don't understand the math behind quantum entanglement.
Any Ideas/Suggestion/Critics about the source?
Thanks.
Quantum entanglement is a phenomenon in quantum physics where two or more particles become connected in such a way that the state of one particle cannot be described without also describing the state of the other particle, even if they are separated by large distances.
In quantum entanglement, when the state of one particle is changed, the state of the other particle will also change instantaneously, regardless of the distance between them. This appears to violate Einstein's theory of relativity, which states that nothing can travel faster than the speed of light.
No, it is not possible to use quantum entanglement for faster-than-light communication. While the state of one particle can be changed instantaneously, the communication of information through this change is limited by the speed of light.
Quantum entanglement has potential applications in quantum computing, cryptography, and teleportation. It also has implications for our understanding of fundamental physics and the nature of reality.
No, there have not been any experiments that have definitively shown quantum entanglement to exceed the speed of light. While there have been some controversial experimental results, they have not been widely accepted by the scientific community.