Efficient Conversion of Optical to Mechanical States Close to the Single-Quantum Level

Posted by klaurent Delft

Kavli Affiliate: Simon Groblacher | Summary:Coherent interfaces between optical photons and mechanical excitations provide a promising route towards phonon-state engineering and hybrid quantum information processing. Cavity optomechanical systems enable such interfaces via optomechanically induced transparency (OMIT), allowing coherent mapping between traveling optical fields and localized mechanical modes. However, previous implementations of OMIT conversion protocols were […]


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Scalable Bayesian Optimization of Composite Functions for Image-Based Inverse Problems in Materials Characterization

Posted by klaurent Cornell

Kavli Affiliate: David Muller | Summary:Estimating physical parameters from scientific images is a common inverse problem in materials characterization that often relies on expensive physics-based simulations. In electron microscopy, specimen thickness and crystal mistilt are critical parameters that govern how electrons scatter through the sample, and therefore the accuracy of any atomic-scale structure recovered from […]


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Resolving unconventional gap structure in kagome superconductors with hybrid microwave circuits

Posted by klaurent Cornell

Kavli Affiliate: Debanjan Chowdhury | Summary:Unconventional superconductivity is a hallmark of exotic quantum matter, where determining the pairing symmetry is essential for uncovering its microscopic origin. Kagome superconductors provide a fertile landscape for emergent phenomena arising from strong electronic correlations and nontrivial band topology, yet their superconducting pairing symmetry remains elusive. The superconducting gap structure […]


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Private Computation Space: Experience with Trusted Multi-Cluster Federated Learning for Agriculture

Posted by klaurent Cornell

Kavli Affiliate: Abraham Stroock | Summary:Artificial Intelligence has shown to help improve agricultural practices, yet adoption remains limited: 69% of U.S. farmers have privacy concerns with sharing their data, and these concerns must be addressed before adoption is widespread. While Federated Learning has been demonstrated to protect privacy at scale for other sectors, deploying a […]


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Conspicuous Gas, Cryptic Dust: Spectroscopy and Chromaticity of Complex Periodic Variables

Posted by klaurent Harvard

Kavli Affiliate: David Charbonneau | Summary:Complex periodic variables (CPVs) are young low-mass stars whose light curves show periodic dips indicative of transiting corotating material. The origin and composition of this material are unclear. Here we present new optical and near-infrared spectroscopy and photometry of four CPVs from Magellan, Keck, Hale, MuSCAT1, MuSCAT2, Tierras, KeplerCam, and […]


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ValueGraph: Value-Signal Guided Graph Pre-training for Contextualized User Representation

Posted by klaurent Caltech

Kavli Affiliate: Wei Gao| Summary:Value signals are aggregated user-level moral representations that capture users’ inferred value-related tendencies from their online discourse. User behavior on social media is shaped not only by what users say or whom they interact with, but also by the value signal through which they express attitudes. Existing user representation methods largely […]


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Pre-shipment optical characterization of the SCALES instrument

Posted by klaurent Caltech

Kavli Affiliate: Dimitri Mawet| Summary:The Slicer Combined with an Array of Lenslets for Exoplanet Spectroscopy (SCALES) instrument is a 1-5 micron imager and 2-5 micron integral field spectrograph, currently being commissioned on the Keck II Telescope. SCALES is optimized for exoplanet high-contrast imaging and spectroscopic characterization, and will be sensitive to older, colder exoplanets than […]


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Determinant Quantum-Quantum Monte Carlo: Coherent Auxiliary-Field Sampling

Posted by klaurent Cornell

Kavli Affiliate: Debanjan Chowdhury | Summary:We introduce determinant quantum-quantum Monte Carlo (DQ$^2$MC), a quantum algorithm that lifts the auxiliary-field sampling and averaging at the operational core of determinant quantum Monte Carlo onto a quantum computer. A determinant oracle synthesizes the DQMC amplitudes directly from a block encoding of the single-particle action matrix via quantum singular […]


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Layer-Controlled Intermolecular Coupling and Many-Body Effects in C$_60$ Films

Posted by klaurent Berkeley, This Week: Nanoscience

Kavli Affiliate: Alessandra Lanzara | Summary:Crystalline C$_60$ is a molecular solid whose electronic properties emerge from the interplay of intermolecular hopping, electron correlations, and electron-vibration coupling. Unlike moir$rmacutee$ van der Waals heterostructures, where interaction strength is commonly tuned by twist angle, molecular materials offer a complementary route in which layer number, molecular orientation, and substrate […]


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ScatterWorks: A Python package for building and solving scattering network models

Posted by klaurent Delft, This Week: Nanoscience

Kavli Affiliate: Anton Akhmerov | Summary:Network models provide an efficient framework for studying non-interacting transport and wave-propagation phenomena in disordered and topological systems. We introduce ScatterWorks, an open-source Python package for building and solving network models. The package uses a compact network representation with composable transformation operations (tile, cut, relink, and union) to enable flexible […]


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