Strain continuously rotates the Néel vector in altermagnetic MnTe

Posted by klaurent Berkeley

Kavli Affiliate: James Analytis| Summary:Altermagnetism has recently emerged as a distinct class of collinear antiferromagnets that break time-reversal symmetry, exhibiting a host of novel properties. Applied strain has attracted particular attention as a key tuning parameter for altermagnets. Although several experimental studies have demonstrated the preparation of single-domain states through a combination of applied strain […]


Continue.. Strain continuously rotates the Néel vector in altermagnetic MnTe

Quantum Frequency Resolved Optical Gating of Few-Cycle Squeezed Vacuum

Posted by klaurent Caltech

Kavli Affiliate: Alireza Marandi | Summary:Offering terahertz of bandwidths and femtosecond timescales, ultrafast optics is enabling both the study of fundamental quantum optical phenomena and the advancement of quantum-enhanced applications. However, unlocking the full potential of ultrafast quantum optics requires accessing the temporal characteristics of ultrashort quantum pulses across ultrabroad bandwidths. This is particularly important […]


Continue.. Quantum Frequency Resolved Optical Gating of Few-Cycle Squeezed Vacuum

ASTRAFier: A Novel and Scalable Transformer-based Stellar Variability Classifier

Posted by klaurent MIT

Kavli Affiliate: George Ricker | Summary:Photometric missions such as Kepler and TESS have generated millions of light curves covering almost the entire sky, offering unprecedented opportunities to study stellar variability and advance our understanding of the Universe. In this data-rich environment, machine learning has emerged as a powerful tool to efficiently and accurately process and […]


Continue.. ASTRAFier: A Novel and Scalable Transformer-based Stellar Variability Classifier

Ten-Second Electron-Spin Coherence in Isotopically Engineered Diamond

Posted by klaurent Delft

Kavli Affiliate: Tim H. Taminiau | Summary:Solid-state spin defects are a promising platform for quantum networks. A key requirement is to combine long ground-state spin-coherence times with a coherent optical transition for spin-photon entanglement. Here, we investigate the spin and optical coherence of single nitrogen-vacancy (NV) centres in (111)-grown isotopically engineered diamond. Our diamond-growth process […]


Continue.. Ten-Second Electron-Spin Coherence in Isotopically Engineered Diamond

The Way We Tally Becomes the Tale: the Impact of Selection Strategies on the Inferred Evolution of Little Red Dots Across Cosmic Time

Posted by klaurent Cambridge

Kavli Affiliate: Roberto Maiolino | Summary:Little Red Dots (LRDs) have emerged as a key population linked to early black hole growth, yet photometric selections have predominantly targeted only the most extreme red systems, thereby shaping our current understanding of this new population of objects. In this work, we deliberately explore a broad range of optical […]


Continue.. The Way We Tally Becomes the Tale: the Impact of Selection Strategies on the Inferred Evolution of Little Red Dots Across Cosmic Time

Quantum coherent transceivers toward Holevo-limited communications

Posted by klaurent Caltech

Kavli Affiliate: Ali Hajimiri | Summary:The Holevo limit bounds the channel capacity of a communication channel in which information is encoded in quantum states in a Hilbert space at the transmitter and decoded using quantum measurements at the receiver. Saturating the Holevo limit requires quantum-limited transceivers that either generate quantum states of light or employ […]


Continue.. Quantum coherent transceivers toward Holevo-limited communications

Metal Mayhem at $rm z sim 7-10$: Diversity and Evolution of Gas-Phase Metallicity Gradients

Posted by klaurent Cambridge

Kavli Affiliate: Roberto Maiolino | Summary:We present a JWST/NIRSpec-IFU study of metallicity gradients in seven low-metallicity systems at $z=7.2-9.5$. The main sample spans stellar masses of $rm log(M_*/M_odot) sim 7.8-9.5$, star formation rates (SFRs) of $rm log(textSFR / M_odot textyr^-1) sim 0.5-2.5$, and gas-phase metallicities of $4%-15 %~Z_odot$. Within our sample, we also identify three […]


Continue.. Metal Mayhem at $rm z sim 7-10$: Diversity and Evolution of Gas-Phase Metallicity Gradients

Magnetic-Field-Induced Inspiral of Binaries with Circumbinary Disk: Black Hole and Protostellar Systems

Posted by klaurent Peking

Kavli Affiliate: Kohei Inayoshi | Summary:The orbital decay of binary systems is a critical process for understanding the evolution of massive binary black holes (MBBHs) and binary star formation. Performing high-resolution three-dimensional magnetohydrodynamic (MHD) simulations, we investigate a binary system that accretes gas from an infalling envelope analogous to the collapse of molecular cloud cores […]


Continue.. Magnetic-Field-Induced Inspiral of Binaries with Circumbinary Disk: Black Hole and Protostellar Systems

Magnetic-Field-Induced Inspiral of Binaries with Circumbinary Disk: Black Hole and Protostellar Systems

Posted by klaurent Peking

Kavli Affiliate: Kohei Inayoshi | Summary:The orbital decay of binary systems is a critical process for understanding the evolution of massive binary black holes (MBBHs) and binary star formation. Performing high-resolution three-dimensional magnetohydrodynamic (MHD) simulations, we investigate a binary system that accretes gas from an infalling envelope analogous to the collapse of molecular clouds in […]


Continue.. Magnetic-Field-Induced Inspiral of Binaries with Circumbinary Disk: Black Hole and Protostellar Systems

An Intrinsic Degeneracy in a Simplified Semi-Analytic Two-Spot Model for Thermal X-Ray Pulse-Profiles

Posted by klaurent Peking

Kavli Affiliate: Renxin Xu | Summary:We identify an intrinsic degeneracy in the simplified semi-analytic two-spot model for parameter inference in thermal X-ray pulse-profile modeling. Although the exact algebraic degeneracy exists in our simplified model without Doppler effects, we generate synthetic pulse-profiles and show that this degeneracy can still result in two peaks on the likelihood […]


Continue.. An Intrinsic Degeneracy in a Simplified Semi-Analytic Two-Spot Model for Thermal X-Ray Pulse-Profiles