Entanglement isn't particularly useful for communication, you can't send bits without sending photons (or similar) physically. Quantum mechanics doesn't permit ansibles as far as anyone knows.
While the second and third parts if your comment are complete true, the first part
> Entanglement isn't particularly useful for communication
I would say is false. Entanglement lets you do some fun and theoretically useful stuff for communication tasks. At the most basic level sharing entanglement lets you upgrade a classical communication channels you have into a quantum one (sending 2 bits and burning an entangled pair lets you send a qubit). You can do increasing fancy stuff if you so wish, if you are sufficiently paranoid you might be interested in device independent cryptography, which is only possible because of entanglement.
Is it the issue or is it rather than any measurement of entangled quantum state change is modifying the measurement to the extent that there is a chicken and egg problem?
Basically reading quantum data is also a write operation?
I am unable to grasp why FTL communication would break causality, it's like my brain just refuses to accept it. Seriously, I've had it explained several times over the years.
roywiggins|1 year ago
eigenket|1 year ago
> Entanglement isn't particularly useful for communication
I would say is false. Entanglement lets you do some fun and theoretically useful stuff for communication tasks. At the most basic level sharing entanglement lets you upgrade a classical communication channels you have into a quantum one (sending 2 bits and burning an entangled pair lets you send a qubit). You can do increasing fancy stuff if you so wish, if you are sufficiently paranoid you might be interested in device independent cryptography, which is only possible because of entanglement.
josefritzishere|1 year ago
aatd86|1 year ago
Basically reading quantum data is also a write operation?
bloopernova|1 year ago