Kavli Affiliate: David W. Miller | Summary:Polarization-resolved control and measurement of the optical field are essential for a wide range of photonic systems, including coherent communication, polarimetric sensing, and quantum information processing. We present a photonic integrated circuit that enables the generation and analysis of arbitrary polarization states. The device provides reconfigurable access to the […]
Kavli Affiliate: Ellen J. Hoffman | Authors: April Pruitt, Liang Yang, Seoyeon Lee, Novin Balafkan, Carina Seah, Yi Dai, Elizabeth Davidson, Suha Khan, Annabel Sen, Jenny Liu, Isabel Wood, Gang Xu, Xiayuan Huang, Marina Carlson, Dejian Zhao, Priyanka Jamadagni, Grace Dossou, Kayla Retallick-Townsley, Xinyun Liu, P.J. Michael Deans, Meilin Fernandez Garcia, Huanyao Gao, Zuoheng Wang […]
Kavli Affiliate: Denis Wirtz | Authors: John Michel, Andre Forjaz, Vasco Queiroga, Kelly Casella, Kaitlin Stivers, Helen Nguyen, Maria Browne, Feiyu Chen, Ada Tam, Omkar Dhaygude, Hongni Fan, Hitoaki Maehira, Cheng Ting Lin, Elise Gray-Gaillard, Talia Benducci, Suguru Yamauchi, Ife Shoyombo, Ziying Xu, Eugene Shenderov, Peng Huang, Denis Wirtz, Jennifer Elisseeff, Yun Chen, Malcolm V […]
Kavli Affiliate: Maryam Ziaei | Authors: Arjun Dave, Shuer Ye, Xiaqing Lan, Alireza Salami, Heidi Jacobs and Maryam Ziaei | Summary: The locus coeruleus (LC) regulates attention, arousal and adaptive behavior via widespread noradrenergic projections to cortex, yet its large-scale cortical organization and vulnerability to aging remain poorly understood. Using ultra-high-field 7T–MRI during naturalistic viewing […]
Kavli Affiliate: Maryam Ziaei and Menno Witter | Authors: Shuer Ye, Arjun Dave, Xiaqing Lan, Menno P. Witter, Alireza Salami and Maryam Ziaei | Summary: Amygdala-related functional connectivity plays a crucial role in human emotion, cognition, and mental well-being. The amygdala is a highly heterogeneous structure, with subregions that have both distinct and overlapping functions. […]
Kavli Affiliate: Erin Kara | Summary:We perform the first systematic study of the minute-to-hours-timescale stochastic variability observed in the X-ray luminosity of tidal disruption events (TDEs) using XMM-Newton data and Fourier analysis methods. We measure the spectral properties, power spectral densities (PSDs), fractional variability amplitudes, and energy dependence of the variability for 18 TDEs spanning […]
Kavli Affiliate: Wei Gao| Summary:The ability to manipulate tools significantly expands the set of tasks a robot can perform. Yet, tool manipulation represents a challenging class of dexterity, requiring grasping thin objects, in-hand object rotations, and forceful interactions. Since collecting teleoperation data for these behaviors is challenging, sim-to-real reinforcement learning (RL) is a promising alternative. […]
Kavli Affiliate: Savdeep Sethi | Summary:Nonreciprocal theories are used to model a broad array of non-equilibrium phenomena found in nature ranging from biological systems like networks of neurons to the behavior of overflowing water fountains. This includes systems broadly classified as active matter systems. We show that the stochastic theories which describe nonreciprocal interactions can […]
Kavli Affiliate: Carlos Wagner | Summary:We consider a dark sector consisting of fermionic dark matter (DM) charged under a broken dark $U(1)_D$ gauge symmetry, interacting with the Standard Model through kinetic mixing. In such models, the DM annihilation cross section is typically suppressed by the small kinetic mixing and or a heavy mediator, often leading […]
Kavli Affiliate: Erin Kara | Summary:We report the first direct measurement of the period derivative in a quasi-periodic eruption (QPE), finding a smoothly increasing period with $dotPapprox (1.7pm 0.02)times10^-2$ d d$^-1$ in the source ZTF19acnskyy/"Ansky". Most models for QPEs invoke repeated interactions of a stellar-mass orbiting companion around the supermassive black hole (SMBH) in an […]