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In fiction, (notably Ernest Cline's novel Armada and Charles Stross's books Singularity Sky and Iron Sunrise) Quantum Entanglement is used for long distance communication.

In reality, given our current understanding, how feasible is this?

Is Quantum Entanglement potentially predictable enough and stable enough to act as a method of communication? I understand that our current level of technology might not be sofisticated enough to create such a device today (please correct me if I am wrong).

I am wondering if our current understanding of Quantum Entaglement today suggests that such a device may be possible in the future?

Or does our current understanding indicate that such a device would only be possible in the realms of fiction?

Norbert Schuch
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Jimmery
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1 Answers1

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I just want to clarify the comments and say: Quantum entanglement is not a mean of communication, entangled particles do not send information to one an other. They're just set in a way (which we totally cannot comprehend), that knowing the state of one particle will always determine the state of the other. You cannot use such a system to send information.

For example, If you want to send information you would want to make a change in the state of one particle and then you would want the other one's state to change too. But changing a state of one particle means you will measure first, measurement breaks the entanglement.

However there are applications of this phenomenon, if you want to read further, most relevant is quantum teleportation.

Ismasou
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