Tag Archives: SPUC

Context for Parametric conversion in semi-classical optics

Expansion and references to the 2009 ABB conference abstract While quantum theory is an incomplete description of reality (Einstein), its validity as a description of light/photons in non-linear crystals is questionable.  In the parametric down-conversion (PDC) phenomenon, a single-frequency laser beam … Continue reading

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Parametric conversion in semi-classical optics

Poster-paper at the Aharonov Bohm and Berry Phase Anniversary (ABB 50/25) Conference at Bristol, 14-15 December 2009: Trevor W Marshall & Max K Wallis (Cardiff University) The rainbow of down-converted radiation emerging from a laser-pumped nonlinear crystal has a natural … Continue reading

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Challenge to fans of QM ‘photons’

Describing light as ‘photons’ is of course just a model; QM is just a series of calculation procedures (algorithms), Schrödinger’s “Cat” paradox showed it to be self-contradictory, which remains unresolved, though fans of QM indulge in semantics (‘apparent’ paradox – … Continue reading

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