Quantum Cryptography can not work

Hi All,

It seems to me, that Quantum Cryptography can not work. The flaw of it
is in the misunderstanding of the Physics involved, by its advocates.

Some assume photon entanglement, which is an umpossibility. There is
no such thing as entanglement, period.

Others assume that evesdropper has to read the message directly using
polarization filters. It is not so.
What if he uses a laser amplifier, making a number of identical
photones from initial one? And then sending one of them to the
receiver? And having the rest of them split in two beams, polarization
of each of which determined using filter?
Polarizations are NOT complimentary variables in QM. The principle of
uncertainty does not apply to them. Which means, that you can measure
both with 100% precision.

What do you think?

es

.