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$2$ ebits $+$ $1$ bit $ = 2$ bits?

The protocol you describe is correct, but the resource estimation is wrong. Furthermore, something like superdense coding with purely classical bits is prohibited by the No-Signaling Principle. This ...
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3 votes

Is it possible to prevent quantum communication detection?

You don't need quantum in order to communicate while evading detection. There's nearly a century of research on what is known as LPI/LPD (Low-probability of intercept/low-probability of detection) ...
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3 votes
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Is it possible to prevent quantum communication detection?

Regardless of whether Alice and Bob share some amount of entangled states, there is no way for them to communicate without having Alice physically sending something to Bob. "Something" means ...
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