Maximal Quantum Interaction between Free Electrons and Photons.

The emerging field of free-electron quantum optics enables electron-photon entanglement and holds the potential for generating nontrivial photon states for quantum information processing. Although recent experimental studies have entered the quantum regime, rapid theoretical developments predict that qualitatively unique phenomena only emerge beyond a certain interaction strength. It is thus pertinent to identify the maximal electron-photon interaction strength and the materials, geometries, and particle energies that enable one to approach it.

Many photonic design problems are sparse QCQPs.

Photonic design is a process of mathematical optimization of a desired objective (beam formation, mode conversion, etc.) subject to the constraint of Maxwell's equations. Finding the optimal design is challenging: Generically, these problems are highly nonconvex and finding global optima is NP hard.

Fundamental limits to multi-functional and tunable nanophotonic response.

Tunable and multi-functional nanophotonic devices are used for applications from beam steering to sensing. Yet little is understood about fundamental limits to their functionality. The difficulty lies with the fact that it is a single structure that must exhibit optimal response over multiple scenarios.

What Are Americans' Favorite Aspects of Partnered Sex? Findings From a U.S. Nationally Representative Survey.

Using data from an online, cross-sectional U.S. nationally representative survey, we analyzed participants' responses to an open-ended item that asked them to look back on their entire lives and to describe their favorite aspects of being sexual with a partner.

Complex Attention-Deficit Hyperactivity Disorder in a 4-Year-Old With Repaired Critical Congenital Heart Disease and Autism Spectrum Disorder.

Background: Congenital heart disease (CHD) is a risk factor for developmental delay and for attention-deficit hyperactivity disorder (ADHD). The Cardiac Neurodevelopmental Outcome Collaborative has developed recommendations for ongoing monitoring of this at-risk population to be able to detect developmental, learning, and behavioral concerns, as they become apparent as a child ages.

Case Presentation: A 4-year-old boy with tetralogy of Fallot with a ventricular septal defect repaired in infancy was followed periodically in the cardiac neurodevelopmental follow-up clinic and diagnosed with autism spectrum disorder as well as additional developmental and medical issues.