Optimizing for a Near Single-Mode Type-0 Optical Parametric Amplifier in Nanophotonics

Posted by dbos Caltech, This Week: Nanoscience

Kavli Affiliate: Alireza Marandi | First 5 Authors: Shivam Mundhra, Elina Sendonaris, Robert M. Gray, James Williams, Alireza Marandi | Summary: Thin-film lithium niobate (TFLN) has recently emerged as a promising platform for integrated nonlinear photonics, enabling the use of optical parametric amplifiers (OPAs) for applications in quantum information processing, precision metrology, and ultrafast optical […]


Continue.. Optimizing for a Near Single-Mode Type-0 Optical Parametric Amplifier in Nanophotonics

Optimizing for a Near Single-Mode Type-0 Optical Parametric Amplifier in Nanophotonics

Posted by dbos Caltech, This Week: Nanoscience

Kavli Affiliate: Alireza Marandi | First 5 Authors: Shivam Mundhra, Elina Sendonaris, Robert M. Gray, James Williams, Alireza Marandi | Summary: Thin-film lithium niobate (TFLN) has recently emerged as a promising platform for integrated nonlinear photonics, enabling the use of optical parametric amplifiers (OPAs) for applications in quantum information processing, precision metrology, and ultrafast optical […]


Continue.. Optimizing for a Near Single-Mode Type-0 Optical Parametric Amplifier in Nanophotonics

Optimizing for a Near Single-Mode Type-0 Optical Parametric Amplifier in Nanophotonics

Posted by dbos Caltech, This Week: Nanoscience

Kavli Affiliate: Alireza Marandi | First 5 Authors: Shivam Mundhra, Elina Sendonaris, Robert M. Gray, James Williams, Alireza Marandi | Summary: Thin-film lithium niobate (TFLN) has recently emerged as a promising platform for integrated nonlinear photonics, enabling the use of optical parametric amplifiers (OPAs) for applications in quantum information processing, precision metrology, and ultrafast optical […]


Continue.. Optimizing for a Near Single-Mode Type-0 Optical Parametric Amplifier in Nanophotonics

Rarely categorical, always high-dimensional: how the neural code changes along the cortical hierarchy

Posted by dbos Columbia, This Week: Neuroscience

Kavli Affiliate: Liam Paninski | Authors: Stefano Fusi and Liam Paninski | Summary: The brain is highly structured both at anatomical and functional levels. However, within individual brain areas, neurons often exhibit very diverse and seemingly disorganized responses. A more careful analysis shows that these neurons can sometimes be grouped together into specialized subpopulations (categorical […]


Continue.. Rarely categorical, always high-dimensional: how the neural code changes along the cortical hierarchy

How do uncertainties in galaxy formation physics impact field-level galaxy bias?

Posted by dbos Stanford, This Week: Astrophysics

Kavli Affiliate: Risa H. Wechsler | First 5 Authors: Mahlet Shiferaw, Nickolas Kokron, Risa H. Wechsler, , | Summary: Our ability to extract cosmological information from galaxy surveys is limited by uncertainties in the galaxy-dark matter halo relationship for a given galaxy population, which are governed by the intricacies of galaxy formation. To quantify these […]


Continue.. How do uncertainties in galaxy formation physics impact field-level galaxy bias?

Self-supervised cost of transport estimation for multimodal path planning

Posted by Caltech

Kavli Affiliate: Morteza Gharib | First 5 Authors: Vincent Gherold, Ioannis Mandralis, Eric Sihite, Adarsh Salagame, Alireza Ramezani | Summary: Autonomous robots operating in real environments are often faced with decisions on how best to navigate their surroundings. In this work, we address a particular instance of this problem: how can a robot autonomously decide […]


Continue.. Self-supervised cost of transport estimation for multimodal path planning

A comprehensive study of type I (thermonuclear) bursts in the new transient SRGA J144459.2$-$604207

Posted by dbos Peking

Kavli Affiliate: Renxin Xu | First 5 Authors: Tao Fu, Zhaosheng Li, Yuanyue Pan, Long Ji, Yupeng Chen | Summary: We report analysis of $textit{Insight}$-HXMT observations of the newly discovered accreting millisecond pulsar SRGA J144459.2$-$604207. During the outburst, detected in 2024 February by $textit{eROSITA}$, the broadband persistent spectrum was well fitted by an absorbed Comptonization […]


Continue.. A comprehensive study of type I (thermonuclear) bursts in the new transient SRGA J144459.2$-$604207

TOI-4504: Exceptionally large Transit Timing Variations induced by two resonant warm gas giants in a three planet system

Posted by dbos MIT

Kavli Affiliate: Roland Vanderspek | First 5 Authors: Michaela Vítková, Rafael Brahm, Trifon Trifonov, Petr Kabáth, Andrés Jordán | Summary: We present a joint analysis of TTVs and Doppler data for the transiting exoplanet system TOI-4504. TOI-4504 c is a warm Jupiter-mass planet that exhibits the largest known transit timing variations (TTVs), with a peak-to-node […]


Continue.. TOI-4504: Exceptionally large Transit Timing Variations induced by two resonant warm gas giants in a three planet system

The First JWST View of a 30-Myr-old Protoplanetary Disk Reveals a Late-stage Carbon-rich Phase

Posted by dbos Peking

Kavli Affiliate: Gregory J. Herczeg | First 5 Authors: Feng Long, Ilaria Pascucci, Adrien Houge, Andrea Banzatti, Klaus M. Pontoppidan | Summary: We present a JWST MIRI/MRS spectrum of the inner disk of WISE J044634.16$-$262756.1B (hereafter J0446B), an old ($sim$34 Myr) M4.5 star but with hints of ongoing accretion. The spectrum is molecule-rich and dominated […]


Continue.. The First JWST View of a 30-Myr-old Protoplanetary Disk Reveals a Late-stage Carbon-rich Phase

SZ-X-ray Surface Brightness Fluctuations in the SPT-XMM clusters

Posted by Chicago

Kavli Affiliate: Bradford A. Benson | First 5 Authors: Charles Romero, Massimo Gaspari, Gerrit Schellenberger, Bradford A. Benson, Lindsey E. Bleem | Summary: The hot plasma in galaxy clusters, the intracluster medium (ICM), is expected to be shaped by subsonic turbulent motions, which are key for heating, cooling, and transport mechanisms. The turbulent motions contribute […]


Continue.. SZ-X-ray Surface Brightness Fluctuations in the SPT-XMM clusters