Molecular tuning of excitons and polarization anisotropy in hybrid bilayer crystals

Posted by dbos Berkeley

Kavli Affiliate: Jeffrey B. Neaton | First 5 Authors: Tomojit Chowdhury, Aurélie Champagne, Fauzia Mujid, Patrick Knüppel, Zehra Naqvi | Summary: Bilayer crystals, built from monolayers of two-dimensional (2D) crystals with different lattice orientations, generate interlayer potentials leading to unique excitonic properties. However, the ability to tune the interlayer potential is limited by the fixed […]


Continue.. Molecular tuning of excitons and polarization anisotropy in hybrid bilayer crystals

Molecular tuning of excitons in four-atom-thick hybrid bilayer crystals

Posted by dbos Berkeley

Kavli Affiliate: Jeffrey B. Neaton | First 5 Authors: Tomojit Chowdhury, Aurélie Champagne, Patrick Knüppel, Zehra Naqvi, Mengyu Gao | Summary: Bilayer crystals, formed by stacking monolayers of two-dimensional (2D) crystals, create interlayer potentials that govern excitonic phenomena but are constrained by their fixed covalent lattices. Replacing one layer with an atomically thin molecular crystal […]


Continue.. Molecular tuning of excitons in four-atom-thick hybrid bilayer crystals

Molecular tuning of excitons in four-atom-thick hybrid bilayer crystals

Posted by dbos Berkeley

Kavli Affiliate: Jeffrey B. Neaton | First 5 Authors: Tomojit Chowdhury, Aurélie Champagne, Patrick Knüppel, Zehra Naqvi, Mengyu Gao | Summary: Bilayer crystals, formed by stacking monolayers of two-dimensional (2D) crystals, create interlayer potentials that govern excitonic phenomena but are constrained by their fixed covalent lattices. Replacing one layer with an atomically thin molecular crystal […]


Continue.. Molecular tuning of excitons in four-atom-thick hybrid bilayer crystals

Floquet-Thermalization via Instantons near Dynamical Freezing

Posted by dbos Cornell

Kavli Affiliate: Debanjan Chowdhury | First 5 Authors: Rohit Mukherjee, Haoyu Guo, Debanjan Chowdhury, , | Summary: Periodically driven Floquet quantum many-body systems have revealed new insights into the rich interplay of thermalization, and growth of entanglement. The phenomenology of dynamical freezing, whereby a translationally invariant many-body system exhibits emergent conservation laws and a slow […]


Continue.. Floquet-Thermalization via Instantons near Dynamical Freezing

T-GMSI: A transformer-based generative model for spatial interpolation under sparse measurements

Posted by dbos Cornell

Kavli Affiliate: Jie Shan | First 5 Authors: Xiangxi Tian, Jie Shan, , , | Summary: Generating continuous environmental models from sparsely sampled data is a critical challenge in spatial modeling, particularly for topography. Traditional spatial interpolation methods often struggle with handling sparse measurements. To address this, we propose a Transformer-based Generative Model for Spatial […]


Continue.. T-GMSI: A transformer-based generative model for spatial interpolation under sparse measurements

Low two-level-system noise in hydrogenated amorphous silicon

Posted by dbos Caltech

Kavli Affiliate: Sunil R. Golwala | First 5 Authors: Fabien Defrance, Andrew D. Beyer, Jordan Wheeler, Jack Sayers, Sunil R. Golwala | Summary: At sub-Kelvin temperatures, two-level systems (TLS) present in amorphous dielectrics source a permittivity noise, degrading the performance of a wide range of devices using superconductive resonators such as qubits or kinetic inductance […]


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A mechanical quantum memory for microwave photons

Posted by dbos Caltech

Kavli Affiliate: Mohammad Mirhosseini | First 5 Authors: Alkım B. Bozkurt, Omid Golami, Yue Yu, Hao Tian, Mohammad Mirhosseini | Summary: Long-lived mechanical oscillators are actively pursued as critical resources for quantum storage, sensing, and transduction. However, achieving deterministic quantum control while limiting mechanical dissipation remains a persistent challenge. Here, we demonstrate strong coupling between […]


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Relativistic Mott transition in strongly correlated artificial graphene

Posted by dbos Cornell

Kavli Affiliate: Jie Shan | First 5 Authors: Liguo Ma, Raghav Chaturvedi, Phuong X. Nguyen, Kenji Watanabe, Takashi Taniguchi | Summary: The realization of graphene has provided a bench-top laboratory for quantum electrodynamics. The low-energy excitations of graphene are two-dimensional massless Dirac fermions with opposite chiralities at the $pm$K valleys of the graphene Brillouin zone. […]


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Optimizing for a Near Single-Mode Type-0 Optical Parametric Amplifier in Nanophotonics

Posted by dbos Caltech

Kavli Affiliate: Alireza Marandi | First 5 Authors: Shivam Mundhra, Elina Sendonaris, Robert M. Gray, James Williams, Alireza Marandi | Summary: Thin-film lithium niobate (TFLN) has recently emerged as a promising platform for integrated nonlinear photonics, enabling the use of optical parametric amplifiers (OPAs) for applications in quantum information processing, precision metrology, and ultrafast optical […]


Continue.. Optimizing for a Near Single-Mode Type-0 Optical Parametric Amplifier in Nanophotonics

Optimizing for a Near Single-Mode Type-0 Optical Parametric Amplifier in Nanophotonics

Posted by dbos Caltech

Kavli Affiliate: Alireza Marandi | First 5 Authors: Shivam Mundhra, Elina Sendonaris, Robert M. Gray, James Williams, Alireza Marandi | Summary: Thin-film lithium niobate (TFLN) has recently emerged as a promising platform for integrated nonlinear photonics, enabling the use of optical parametric amplifiers (OPAs) for applications in quantum information processing, precision metrology, and ultrafast optical […]


Continue.. Optimizing for a Near Single-Mode Type-0 Optical Parametric Amplifier in Nanophotonics