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Theory of entangled-plasmon-pair generation in graphene

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Date and time Jul 11, 2018
from 12:10 PM to 01:00 PM
Location 60 St. George Street, MP 606
Host Young-June Kim

M. M. Fogler

Department of Physics, University of California San Diego

We study spontaneous parametric down conversion of terahertz photons into entangled plasmon pairs in graphene.This process is permitted by both symmetry and kinematics in a ribbon with an electron density gradient. We show that the conversion rate is maximized in ribbons containing lateral p-n junctions. We discuss how the quantum entanglement of the generated pairs can be measured by near-field optics techniques. We specify requirements for achieving plasmonic two-mode squeezed states and plasmonic instabilities in the presence of losses.We also study nonlinear plasmonic effects in a large-area uniformly doped graphene sheets due to third-order optical response.
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