Ultrasonic super-oscillation wave-packets with an acoustic meta-lens

High-frequency nonlinear acoustic beams and wave packets

Gaussian beams and wave packets are formally equivalent to high-frequency solutions of the linear wave equation with complex-valued phase functions. The theory of weakly nonlinear high-frequency waves is extended in this paper to allow for complex phase solutions. The procedure is similar to nonlinear geometrical optics and the nonlinearity causes the phase to vary, leading to the development o...

Super-Absorption of Acoustic Waves with Bubble Meta-Screens

Improving TCP latency with super-packets

The vast majority of today’s Internet traffic uses TCP connections whose lengths range from a few packets to many orders of magnitude more. Even though short flows are prevalent in web traffic and their completion time can directly impact user experience, these flows are generally not prioritized and can experience drops because of the load caused by longer TCP flows on routers. In this paper, ...

N-Photon wave packets interacting with an arbitrary quantum system

We present a theoretical framework that describes a wave packet of light prepared in a state of definite photon number interacting with an arbitrary quantum system (e.g. a quantum harmonic oscillator or a multi-level atom). Within this framework we derive master equations for the system as well as for output field quantities such as quadratures and photon flux. These results are then generalize...

Engineering biphoton wave packets with an electromagnetically induced grating

Jianming Wen,1,2,* Yan-Hua Zhai,3 Shengwang Du,4 and Min Xiao1,2 1Department of Physics, National Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210093, China 2Department of Physics, University of Arkansas, Fayetteville, Arkansas 72701, USA 3Department of Physics, University of Maryland, Baltimore County, Baltimore, Maryland 21250, USA 4Department of Physics, The Hong Ko...