One More Time: Revisiting Neural Quantum States from a Reinforcement Learning Perspective

Posted by klaurent Delft, This Week: Nanoscience

Kavli Affiliate: Eliska Greplova | Summary:Neural quantum states (NQS) provide a flexible and scalable framework for approximating quantum many-body wavefunctions. Among NQS parameterizations, autoregressive models are especially attractive because they enable exact, independent sampling from the Born distribution, avoiding the autocorrelation and mixing issues of Markov chain methods. Yet their optimization remains comparatively underexplored: Adam […]


Continue.. One More Time: Revisiting Neural Quantum States from a Reinforcement Learning Perspective

TIME Commissioning Observations: II. On-sky Characterization and the 2D Map Data Processing Pipeline

Posted by klaurent Caltech, This Week: Nanoscience

Kavli Affiliate: James Bock | Summary:The Tomographic Ionized-carbon Mapping Experiment (TIME) is a line intensity mapping (LIM) instrument that is designed to observe the power spectrum of the [CII] $158$~$μ$m emission line during the Epoch of Reionization. TIME completed a commissioning run in 2022 at the Arizona Radio Observatory onboard the 12-M Radio Telescope at […]


Continue.. TIME Commissioning Observations: II. On-sky Characterization and the 2D Map Data Processing Pipeline

EFlow: Learning Evidence Flow for Long-Video Reasoning with Adaptive Reflection

Posted by klaurent Caltech, This Week: Nanoscience

Kavli Affiliate: Wei Gao| Summary:Long-video reasoning is fundamentally constrained by how models acquire and utilize visual evidence. Existing tool-augmented video frameworks often interleave temporal grounding and answer reasoning within a single trajectory, causing early semantic hypotheses to bias evidence localization. We term this failure mode premature semantic commitment, where biased grounding retrieves incomplete evidence and […]


Continue.. EFlow: Learning Evidence Flow for Long-Video Reasoning with Adaptive Reflection

A unified framework for determining transition dipole polarization in solid-state spin defects

Posted by klaurent Delft, This Week: Nanoscience

Kavli Affiliate: Simon Groblacher | Summary:Spin-photon interfaces based on solid-state defects are key building blocks for scalable quantum networks and hybrid quantum platforms. Optimizing light-matter coupling in these systems requires precise knowledge of the optical transition dipole polarization, yet for many promising quantum emitters this quantity is hard to determine and therefore remains poorly characterized. […]


Continue.. A unified framework for determining transition dipole polarization in solid-state spin defects

Moiré Phonons and Emergent Exciton-Phonon Coupling in a Moiré Heterobilayer

Posted by klaurent Berkeley, This Week: Nanoscience

Kavli Affiliate: Michael Crommie | Summary:Moiré superlattices have emerged as a new platform for engineering electronic and optical properties in van der Waals heterostructures, enabling control over correlated and excitonic phenomena. Yet the impact of moiré superlattices on exciton-phonon coupling remains largely unexplored. Here we demonstrate emergent, layer-selective coupling between moiré phonons and moiré excitons […]


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Optimizing Resource Costs: A Practical Guide to Achieving Target Security in Verifiable Blind Quantum Computing

Posted by klaurent Delft, This Week: Nanoscience

Kavli Affiliate: Stephanie Wehner | Summary:Verifiable blind quantum computing (VBQC) enables a resource-limited client to securely delegate computations to an untrusted quantum server while maintaining privacy and detecting deviations from the prescribed computation. The noise-robust VBQC protocol of Leichtle et al. achieves this through a round-based structure: the client delegates multiple computation rounds and test […]


Continue.. Optimizing Resource Costs: A Practical Guide to Achieving Target Security in Verifiable Blind Quantum Computing

Confined exciton polaron in MoS$_2$ on twisted-hBN

Posted by klaurent Berkeley, This Week: Nanoscience

Kavli Affiliate: Archana Raja| Summary:The simple electrostatic picture of a trion is that of an excess charge inducing an exciton polarization and binding closer (farther) to the hole (electron) side of it. Trion formation can be forbidden when such spontaneous rearrangement of charges is not allowed by the application of external perturbation, such as electric […]


Continue.. Confined exciton polaron in MoS$_2$ on twisted-hBN

Play2Perfect: What Matters in Dexterous Play Pretraining for Precise Assembly?

Posted by klaurent Caltech, This Week: Nanoscience

Kavli Affiliate: Wei Gao| Summary:Multi-fingered robots promise the speed and dexterity of human hands, yet challenging problems such as precise assembly have remained out of reach. These tasks are contact-rich, making data collection for imitation learning difficult, and sparse-reward, making direct exploration with reinforcement learning (RL) intractable. Consequently, prior work has made progress by structuring […]


Continue.. Play2Perfect: What Matters in Dexterous Play Pretraining for Precise Assembly?

Calibration and Performance of Germanium High Voltage Detectors for SuperCDMS SNOLAB

Posted by klaurent Caltech, This Week: Nanoscience

Kavli Affiliate: Sunil Golwala | Summary:As SuperCDMS SNOLAB is getting ready to search for low mass dark matter particles, using cryogenic Ge and Si detectors, a set of six of the new SuperCDMS High Voltage (HV) detectors (four Ge and two Si) were tested in the Cryogenic Underground TEst facility (CUTE) at SNOLAB. This provided […]


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Odd Diffusion in Three-Dimensional Isotropic Media

Posted by klaurent Berkeley, This Week: Nanoscience

Kavli Affiliate: David T. Limmer | Summary:Odd diffusion is a hallmark of chiral active matter, generating currents transverse to density gradients. Existing theories rely on a linear antisymmetric transport coefficient that exists only in two dimensions, raising the question of whether odd diffusion can occur in isotropic three-dimensional systems. Here we show that such transport […]


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