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On-chip high-order parametric downconversion in the excitonic Mott insulator NbCl for programmable multiphoton entangled states
Dmitry Skachkov, Dirk R. Englund, Michael N. Leuenberger
Spontaneous parametric downconversion (SPDC) and four-wave mixing in and media underpin most entangled-photon sources, but direct generation of higher-order ent…
Er:AlO for Telecom-Band Photonics: Electronic Structure and Optical Properties
Mahtab A. Khan, Jayden D. Craft, Hari P. Paudel +3
Er-doped AlO is a promising host for telecom-band integrated photonics. Here we combine ab initio calculations with a symmetry-resolved analysis to elucidate substitutional…
Multiferroic Dark Excitonic Mott Insulator in the Breathing-Kagome Lattice Material NbCl
Mahtab A. Khan, Naseem Ud Din, Dmitry Skachkov +2
Flat electronic bands strongly enhance Coulomb interactions and can stabilize unconventional insulating states. Motivated by the recent discovery of flat bands in breathing Kagome…
Linear and nonlinear optical response based on many-body GW-Bethe-Salpeter and Kadanoff-Baym approaches for two-dimensional layered semiconductors
Dmitry Skachkov, Dirk R. Englund, Michael N. Leuenberger
The family of 2D layered semiconductors, including transition metal chalcogenides (TMCs) of the form MX (M=Ga, In; X=S, Se, Te) exhibit exceptional nonlinear optical properties. Th…