Planck Constraints on Axion-Like Particles through Isotropic Cosmic Birefringence

Posted by klaurent Tokyo

Kavli Affiliate: Toshiya Namikawa | Summary:We present constraints on isotropic cosmic birefringence induced by axion-like particles (ALPs), derived from the analysis of cosmic microwave background (CMB) polarization measurements obtained with the high-frequency channels of Planck. Recent measurements report a hint of isotropic cosmic birefringence, though its origin remains uncertain. The detailed dynamics of ALPs can […]


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Nowhere left to hide: revealing realistic gravitational-wave populations in high dimensions and high resolution with PixelPop

Posted by klaurent MIT

Kavli Affiliate: Salvatore Vitale | Summary:The origins of merging compact binaries observed by the LIGO-Virgo-KAGRA gravitational-wave detectors remain uncertain, with multiple astrophysical channels possibly contributing to the merger rate. Formation processes can imprint nontrivial correlations in the underlying distribution of source properties, but current understanding of the overall population relies heavily on simplified and uncorrelated […]


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Spin-Photon Correlations from a Purcell-enhanced Diamond Nitrogen-Vacancy Center Coupled to an Open Microcavity

Posted by klaurent Delft

Kavli Affiliate: Ronald Hanson | Summary:An efficient interface between a spin qubit and single photons is a key enabling system for quantum science and technology. We report on a coherently controlled diamond nitrogen-vacancy center electron spin qubit that is optically interfaced with an open microcavity. Through Purcell enhancement and an asymmetric cavity design, we achieve […]


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Laser-cut Patterned, Micrometer-thin Diamond Membranes with Coherent Color Centers for Open Microcavities

Posted by klaurent Delft

Kavli Affiliate: Ronald Hanson | Summary:Micrometer-scale thin diamond devices are key components for various quantum sensing and networking experiments, including the integration of color centers into optical microcavities. In this work, we introduce a laser-cutting method for patterning microdevices from millimeter-sized diamond membranes. The method can be used to fabricate devices with micrometer thicknesses and […]


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The Singapore Consensus on Global AI Safety Research Priorities

Posted by klaurent MIT

Kavli Affiliate: Max Tegmark | Summary:Rapidly improving AI capabilities and autonomy hold significant promise of transformation, but are also driving vigorous debate on how to ensure that AI is safe, i.e., trustworthy, reliable, and secure. Building a trusted ecosystem is therefore essential — it helps people embrace AI with confidence and gives maximal space for […]


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An iterative CMB lensing estimator minimizing instrumental noise bias

Posted by klaurent Cambridge

Kavli Affiliate: Anthony Challinor | Summary:Noise maps from CMB experiments are generally statistically anisotropic, due to scanning strategies, atmospheric conditions, or instrumental effects. Any mis-modeling of this complex noise can bias the reconstruction of the lensing potential and the measurement of the lensing power spectrum from the observed CMB maps. We introduce a new CMB […]


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Interpretable abstractions of artificial neural networks predict behavior and neural activity during human information gathering

Posted by dbos UCSD / Salk

Kavli Affiliate: Marcelo Mattar | Authors: Simone D’Ambrogio, Jan Grohn, Nima Khalighinejad, Marcelo Mattar, Laurence T Hunt and Matthew F Rushworth | Summary: It has been suggested that humans and other animals are driven by a fundamental desire to acquire information about opportunities available in their environments. Not only might such a desire explain pathological […]


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Floquet operator dynamics and orthogonal polynomials on the unit circle

Posted by klaurent Caltech

Kavli Affiliate: N. C. Yeh| First 5 Authors: [#item_custom_name[1, [#item_custom_name[2, [#item_custom_name[3, [#item_custom_name[4, [#item_custom_name[5| Summary:Operator spreading under stroboscopic time evolution due to a unitary is studied. An operator Krylov space is constructed and related to orthogonal polynomials on a unit circle (OPUC), as well as to the Krylov space of the edge operator of the Floquet […]


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Modeling phase transformations in Mn-rich disordered rocksalt cathodes with machine learning interatomic potentials

Posted by klaurent Berkeley

Kavli Affiliate: Gerbrand Ceder| Summary:Mn-rich disordered rocksalt (DRX) cathode materials exhibit a phase transformation from a disordered to a partially disordered spinel-like structure ($δ$-phase) during electrochemical cycling. In this computational study, we used charge-informed molecular dynamics with a fine-tuned CHGNet foundation potential to investigate the phase transformation in Li$_x$Mn$_0.8$Ti$_0.1$O$_1.9$F$_0.1$. Our results indicate that transition metal […]


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