Re: Quantum Cryptography can not work

On Feb 25, 9:13 pm, Peter Fairbrother <zenadsl6...@xxxxxxxxx> wrote:
Mike Amling wrote:
Quantum crypto interception relies on the cloning of single photons, not
where there are many photons in the same state.

The thing is, that from the Quantum Mechanics point of view,
the number of photones does not surface, as they are bosones.
You must go to the secondary quantization and Quantum Electrodynamics,
in order to probe this matter.

As to the changing polarization, the symmetry would change then.
How that is possible? Not in Physics, as far as I know.

es

.

Relevant Pages

  • Re: The time it takes to emit one photon
    ... The only thing is that quantum fields are not necessary ... Particles are excitations of fields". ... Some property that may look obscure in one formulation may be completely ... >> many photons, and the light intensity appears continuous on the screen. ...
    (sci.physics.research)
  • Re: The time it takes to emit one photon
    ... > This is called interference. ... detectors show subpoissonian trigger statistics (e.g. enhanced mutual ... the Quantum Opticians haven't shown ... photons being absorbed precisely specified number of times at specified ...
    (sci.physics.research)
  • Quantum Spookiness Spans the Canary Islands
    ... Quantum Spookiness Spans the Canary Islands ... The distance achieved is 10 times farther than entangled photons ... researchers demonstrated that they could transmit randomly ... range of entanglement and quantum key distribution to 1,500 kilometers. ...
    (sci.physics)
  • Re: Electromagnetic wave and photon spin
    ... Photons are definitely not a math abstraction. ... of propagating EM energy that don't disperse due to the nature of the ... relativistic quantum "vacuum" medium. ... The Nobel Committee avoids committing itself to the ...
    (sci.physics)
  • Re: a question on incompatibility of properties in a one particle system
    ... It does encompass all of the information of a pure j = 0 singlet. ... I can differentiate between meaningless babble and something ... Then you aren't talking about quantum mechanics. ... Then you won't object if I assume you don't consider the photons ...
    (sci.physics.relativity)