Entangled particles exhibit a phenomenon called quantum entanglement, where the properties of two or more particles become correlated in such a way that the state of one particle cannot be described independently of the state of the other, regardless of the distance between them. This non-local correlation has intrigued scientists and led to speculations about its potential applications, including faster-than-light communication. However, it's important to note that quantum entanglement does not allow for superluminal (faster-than-light) communication.
Quantum entanglement cannot be used to transmit information faster than the speed of light because the act of measuring or observing an entangled particle will cause an instantaneous collapse of its wavefunction, destroying the entanglement. This collapse is random and does not convey any meaningful information.
While the entangled particles themselves can be widely separated, the measurement results obtained from these particles will be random and uncorrelated until the measurement information is exchanged at the speed of light through classical communication channels. This means that even if two entangled particles are on opposite ends of the universe, no information can be transmitted between them faster than the speed of light.
However, entangled particles can be used for a concept known as quantum teleportation, which allows for the transfer of quantum states between distant particles. Quantum teleportation relies on classical communication to complete the process, ensuring that the information is not transmitted faster than light.
In summary, while entangled particles are fascinating and have potential applications in quantum technologies, they cannot be used for faster-than-light communication. The speed of light remains the fundamental speed limit for transmitting information through physical channels.