Entangled photon absorption in an organic porphyrin dendrimer
Article Abstract:
A novel effect of the two-photon absorption (TPA) method utilizing the high degree of quantum optical correlation between photon pairs created by the process of spontaneous parametric down conversion is described. A large entangled two-photon absorption (ETPA) cross-section was measured in an organic porphyrin dendrimer and its magnitude suggests that the correlated process most likely involves a single step process by comparable cross-section value to SPA cross-section.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 2006
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Influence of electronic correlation on structural, dynamic, and elastic properties of Mg2Si
Article Abstract:
The impact of electronic correlation on the charge density distribution, band structure, lattice parameters, phonon frequencies and first-order elastic constants of Mg2Si are studied via ab initio calculations. Several levels of approximations are tested which include Hartree-Fock-Roothaan calculations without correlation energy connection and Hartree-Fock with a posteriori correlation energy correction determined using density functional theory.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 1999
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Aggregates of quadrupolar dyes: Giant two-photon absorption from biexciton states
Article Abstract:
A model for aggregates of quadrupolar (DAD or ADA) molecules that relaxes the dipolar approximation for intermolecular electrostatic interactions is described. It is shown that the large two-photon absorption cross-section, typical of quadrupolar chromophores, can be further amplified by orders of magnitude as a result of aggregation.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 2006
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