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Can you explain the one-time pad application a bit more? It seems to me that if Alice and Bob can share a bunch of entangled qbits, they could just as easily sh
by icambron 14y ago
Can you explain the one-time pad application a bit more? It seems to me that if Alice and Bob can share a bunch of entangled qbits, they could just as easily share a classical one-time pad. What am I missing?
- eoinmurray92 14y agoThe key is in the no cloning theorem. If Evil Eve intercepts some of the signal that Alice is sending Bob she will resend incorrect information 50% of the time. In a classical bit stream, ie loads of photons in a fiber or a radio wave, Eve can intercept 10% of the signal without Alice or Bob knowing, and she can recreate and send that 10% perfectly. Alice and Bob can publicly announce measurement bases and a few of the bits to see if the line was touched.
- eoinmurray92 14y agoIm not explaining it very well and its difficult to condense, perhaps I'll write a blog post that goes into more detail for a layman reader.
- icambron 14y agoLet me know if you do; I'm certainly interested.