Nonreciprocal light transmission via optomechanical parametric interactions.

Nonreciprocal transmission of optical or microwave signals is indispensable in various applications involving sensitive measurements. In this paper, we study optomechanically induced directional amplification and isolation in a generic setup including two cavities and two mechanical oscillators by exclusively using blue-sideband drive tones. The input and output ports defined by the two cavity modes are coupled through coherent and dissipative paths mediated by the two mechanical resonators, respectively.

Randomized control study of the effects of executive function training on peer difficulties of children with attention-deficit/hyperactivity disorder C subtype.

Attention-deficit/hyperactivity disorder C subtype (ADHD-C) is associated with social rejection and peer difficulties. The present study evaluates the comparative efficacy of group executive function training (GEFT) with social skills training (SST) in children with ADHD-C in China. A randomized, controlled treatment outcome study that comprised of 52 boys and 29 girls (age range: 9-12years old) was conducted.