Experimental characterization of coherent and non-Markovian errors using tangent space decomposition

Posted by klaurent Berkeley, This Week: Nanoscience

Kavli Affiliate: Birgitta Whaley | Summary:Accurate characterization of coherent and non-Markovian errors remains a central challenge in quantum information processing, as conventional benchmarking techniques typically rely on Markovian and time-independent noise assumptions. In practice, however, quantum devices exhibit both systematic coherent miscalibrations and temporally correlated fluctuations, which complicate error diagnosis and mitigation. Here, we apply […]


Continue.. Experimental characterization of coherent and non-Markovian errors using tangent space decomposition

The Orbital Eccentricity–Radius Distribution for Warm, Single Planets in TESS

Posted by klaurent MIT, This Week: Astrophysics

Kavli Affiliate: Sara Seager | Summary:We characterize the radius-dependent eccentricity distribution of 347 warm (P = 8-200 days) systems with only one transiting planetary candidate identified during Sectors 1-69 of the TESS mission. Using the “photoeccentric effect” in a hierarchical Bayesian framework, we first model the population using discrete planetary size bins (sub-Neptunes, sub-Saturns, and […]


Continue.. The Orbital Eccentricity–Radius Distribution for Warm, Single Planets in TESS

Probing Dust in the MWC 480 Disk from Millimeter to Centimeter Wavelengths

Posted by klaurent Peking, This Week: Astrophysics

Kavli Affiliate: Gregory Herczeg | Summary:We present deep, high-resolution ($sim$100 mas) Karl G. Jansky Very Large Array (VLA) Ka-band (9.1 mm) observations of the disk around MWC 480, and infer dust properties through a combined analysis with archival Atacama Large Millimeter/submillimeter Array (ALMA) data at 0.87, 1.17, 1.33, and 3.0 mm. The prominent dust ring […]


Continue.. Probing Dust in the MWC 480 Disk from Millimeter to Centimeter Wavelengths

A Realistic Pulsar – Supermassive Black Hole Timing Model

Posted by klaurent Peking

Kavli Affiliate: Lijing Shao | Summary:Timing observation of pulsars orbiting around a supermassive black hole (SMBH) can measure the spacetime around the SMBH to a high precision and thus be a novel probe of the gravity theory. Future high-frequency surveys of the Galactic Centre (GC) region to be performed by the next-generation radio telescopes, such […]


Continue.. A Realistic Pulsar – Supermassive Black Hole Timing Model

Cortical oscillations reflect opponent ensemble dynamics through coordinated multifrequency activity

Posted by dbos This Week: Neuroscience, UCSD / Salk

Kavli Affiliate: Dhakshin Ramanathan and Jyoti Mishra | Authors: Jonathan H Mishler, Morteza Salimi, Miranda Francoeur Koloski, Irene Rembado, Carrie Shilyansky, Jyoti Mishra and Dhakshin Ramanathan | Summary: Neural oscillations are widely used as proxies for neuronal activity, where power in individual frequency bands is commonly interpreted as functionally indexing neural circuit engagement. However, power […]


Continue.. Cortical oscillations reflect opponent ensemble dynamics through coordinated multifrequency activity

Imaging the Superconducting Proximity Effect in S-S’-S Transition Edge Sensors

Posted by klaurent Cornell

Kavli Affiliate: Katja C. Nowack | Summary:Proximity effects at superconducting interfaces, between different superconductors (S-S’) or between superconductors and normal metals (S-N), are fundamental to the performance of superconducting electronics, yet only few experiments have directly probed the spatial structure of proximity effects within a device. This is particularly relevant for transition edge sensors (TESs), […]


Continue.. Imaging the Superconducting Proximity Effect in S-S’-S Transition Edge Sensors

Probing the maximum energy of fast radio bursts using thousands of sources from the Second CHIME/FRB Catalog

Posted by klaurent MIT

Kavli Affiliate: Kiyoshi Masui | Summary:Quantifying the maximum energy of fast radio bursts (FRBs) can provide stringent constraints on their emission mechanisms and progenitor models. However, the most energetic bursts are rare, requiring a large sample of FRBs to detect them. In this work, we use the largest available such sample, 2,998 one-off FRBs from […]


Continue.. Probing the maximum energy of fast radio bursts using thousands of sources from the Second CHIME/FRB Catalog

Magnetic-field Order in the Southwestern Rim of RCW 86 Constrained Using X-Ray Polarimetry

Posted by klaurent MIT

Kavli Affiliate: Herman Marshall | Summary:RCW 86 is a supernova remnant whose origin has recently been linked to an off-center explosion within a cavity created by its progenitor star. In the southwestern region, the forward shock is thought to have reached the cavity wall, encountering diverse environmental conditions. We report on the spatially resolved X-ray […]


Continue.. Magnetic-field Order in the Southwestern Rim of RCW 86 Constrained Using X-Ray Polarimetry

Superconducting phase diagram of multi-layer square-planar nickelates

Posted by klaurent Cornell

Kavli Affiliate: David Muller | Summary:The discovery of superconductivity in square-planar nickelates has offered a rich materials platform to explore the origins of cuprate-like superconductivity. Experimental investigations however have largely been limited to the infinite-layer $R$NiO$_2$ ($R$=rare-earth) nickelates. Here, we construct a phase diagram of multi-layer square-planar Nd$_n+1$Ni$_n$O$_2n+2$ compounds and discover signatures of superconductivity for […]


Continue.. Superconducting phase diagram of multi-layer square-planar nickelates

Drosophila melanogaster Nepl15 regulates lifespan, motor function, aging, heart rate, and cellular health in a sex-specific manner

Posted by dbos Yale

Kavli Affiliate: Elena Gracheva | Authors: Shahira Helal Arzoo, Chase Drucker, Rubaia Tasmin, Nicolas Jones, Elena Gracheva, Abigail Matt, Raymond Hsin, Fei Wang, Chao Zhou and Surya Banerjee | Summary: The knock-out mutation of the unique M13 family member, the Drosophila melanogaster (fruit fly) Neprilysin-like 15 (Nepl15), resulted in marked reductions of glycogen and glycerolipid […]


Continue.. Drosophila melanogaster Nepl15 regulates lifespan, motor function, aging, heart rate, and cellular health in a sex-specific manner