Does anyone know anything about Photon Encryption?

I have herd that it is close to unbreakable... Could you please tell me something about it?

Thanks.


Regards,
Jay.

I think you mean "Quantum Cryptology", from the book "Code Book" by Simon Singh there is a brief excert bout how people were toying with the usage of such methods to develop better serial numbers for banknotes etc.

I would suggest if you want more information on the subject to do a search using those keywords, you'll find a whole host of academic papers and websites devoted to it.

It's "unbreakable" because it's using the fact that measurement of a quantum bit collapses it into a base state. More accurate to say that it's impossible to eavesdrop without being detected.

It's not unbreakable, because this "unbreakability" assumes certain non-encrypted messages to be immune to eavesdropping or tampering, which isn't realistic.

Hopefully that's good enough, because I don't feel like copying out all those notes from my quantum computing physics class here.