Do we need photons in parametric down conversion?

Details Do we need photons in parametric down conversion? Do we need photons in parametric down conversion?

1997-11-17

arxiv.org/abs/quant-ph/9711029v2

Physics

Quantum Physics

Submitted to Phys. Rev. Letters See also http://xxx.lanl.gov/abs/quant-ph/9712001 http://xxx.lanl.gov/abs/quant-ph/9711046 h

Scientific paper

The phenomenon of parametric down conversion from the vacuum may be understood as a process in classical electrodynamics, in which a nonlinear crystal couples the modes of the pumping field with those of the zeropoint, or "vacuum" field. This is an entirely local theory of the phenomenon, in contrast with the presently accepted nonlocal theory. The new theory predicts a hitherto unsuspected phenomenon - parametric up conversion from the vacuum.

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