Resonant squeezed light from photonic Cooper pairs
Sanker Timsina, Taha Hammadia, Sahar Gholami Milani, Filomeno S. de Aguiar Júnior, Alexandre Brolo, Rogério de Sousa
DOI 10.1103/PhysRevResearch.6.033067 · Physical Review Research
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Abstract
Raman scattering of photons into phonons gives rise to entangled photon pairs when the phonon emitted in a Stokes process is coherently absorbed in antiStokes scattering, forming the photonic analog of Cooper pairs. We present a nonperturbative theory for the time evolution of photonic Cooper pairs that treats interacting photons and phonons as a hybrid excitation, the Ramaniton. As the Ramaniton propagates in a waveguide it displays quantum oscillations between photon and phonon occupation, leading to resonant squeezed Stokes-antiStokes light when the phonon occupation becomes equal to zero without recurring back to the photon vacuum. This phenomenon is predicted to generate up to 28 dB of squeezed light even in standard silicon on insulator waveguides.
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