We Might Already Speak the Same Language As ET -
onto the entangled qubit . They then make a and the manipulated qubit, storing the results in some classical bits and transmitting that classical data to Bob by any ordinary means, like a radio signal.
The rub, though, and there is one, is that for any of this to work the pair of entangled qubits must retain. Quantum coherence can be thought of as a system holding on to its pure quantum properties. For example, in the famous double-slit experiment an electron can exhibit pure wavelike characteristics of interference that modulate where the electron appears after passing through two tiny slits in a screen, and that wavelike interference only occurs when things are coherent, or undisturbed.
Of course, the next steps; to figure out the protocols of what quantum gates to apply, and even how to respond, may seem hair-raisingly uncertain and complicated. Yet in truth, this would not be any more or less challenging than deciphering a classical extraterrestrial communications channel, and in some ways could be easier initially because we’d know that we were decoding a quantum communication and would have an idea of what possible quantum gates to try, from simple to more complex.
The transmission of computing information is still limited by the speed of light, so this kind of interstellar computing would be collectively slow. But that might not matter if the overall value of the process is vastly amplified by its distribution and the consequent access to greater computational resources .
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