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Brad Jamison
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Can we send a quantum linked signal into space and be able to tell immediately whether or not it is ever observed?
That takes too long.Comeback City said:Welcome to PF!
We would know it was observed if we received a signal back...
I'm not sure about that. I think the problem is broadcasting half of these pairs out into the sky. Then we have to wait for any possible observations. What I'm saying is more real-time. (pun intended).Nugatory said:By "quantum linked system" do you mean one member of a pair of entangled particles? If so, the answer is no, there is no way of knowing whether the remote member of the pair has been observed, measured, or interacted with anything else in any way. Furthermore, the hypothetical remote observer won't even know that the particle is part of an entangled pair.
Quantum entanglement is a phenomenon in which two or more particles become connected in such a way that the state of one particle can affect the state of the other, even when they are separated by vast distances. This connection is known as a quantum link and it allows for the transfer of information and signals between the entangled particles.
By entangling particles and sending them to different locations in space, we can create a quantum network that allows for the transmission of information and signals. This is made possible by the unique property of quantum entanglement, where the state of one particle can instantly affect the state of another particle, regardless of the distance between them.
Quantum entanglement has the potential to revolutionize space exploration by enabling faster and more secure communication between spacecrafts, as well as precise navigation and mapping of deep space objects. It can also aid in the development of quantum sensors for detecting gravitational waves and other cosmic phenomena.
One of the main challenges is maintaining the entanglement of particles over large distances in the harsh conditions of space. Additionally, the technology for detecting and using quantum signals in space is still in its early stages and requires further development and testing.
Unlike traditional communication methods, which rely on transmitting signals through physical channels, quantum entanglement allows for instantaneous communication between entangled particles, regardless of the distance between them. This means that quantum signals can potentially reach much farther and faster than traditional signals, making it a promising approach for space communication.