3,173 research outputs found
Four wave mixing in 3C SiC Ring Resonators
We demonstrate frequency conversion by four wave mixing at telecommunication
wavelengths using an integrated platform in 3C SiC. The process was enhanced by
high-Q and small modal volume ring resonators, allowing the use of mW-level CW
powers to pump the nonlinear optical process. We retrieved the nonlinear
refractive index of 3C SiC and
observed a signal attributed to Raman gain in the structure.Comment: 4 pages, 3 figure
Nonlocality, No-Signalling and Bell's Theorem investigated by Weyl's Conformal Differential Geometry
The principles and methods of the Conformal Quantum Geometrodynamics (CQG)
based on the Weyl's differential geometry are presented. The theory applied to
the case of the relativistic single quantum spin 1/2 leads a novel and
unconventional derivation of Dirac's equation. The further extension of the
theory to the case of two spins 1/2 in EPR entangled state and to the related
violation of Bell's inequalities leads, by an exact albeit non relativistic
analysis, to an insightful resolution of all paradoxes implied by quantum
nonlocality.Comment: arXiv admin note: text overlap with arXiv:1203.003
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