26 citations
7 papers
Beyond Patents: R&D, Capital, and the Productivity Puzzle in Early-Stage High-Tech Firms
Victor, CHEN
This study investigates the relationship between innovation activities and firm-level productivity among early-stage high-tech startups in China. Using a proprietary dataset encomp…
Inverse engineering of fast state transfer among coupled oscillators
Xiao-Jing Lu, Ion Lizuain, J. G. Muga
We design faster-than-adiabatic state transfers (switching of quantum numbers) in time-dependent coupled-oscillator Hamiltonians. The manipulation to drive the process is found usi…
Fast ion shuttling which is robust versus oscillatory perturbations
Hilario Espinós, Javier Echanobe, Xiao-Jing Lu +1
Shuttling protocols designed by shortcut-to-adiabaticity techniques may suffer from perturbations and imperfect implementations. We study the motional excitation of a single ion sh…
Noise Sensitivities for an Atom Shuttled by a Moving Optical Lattice via Shortcuts to Adiabaticity
Xiao-Jing Lu, Andreas Ruschhaupt, Sofía Martínez-Garaot +1
We find the noise sensitivities (i.e., the quadratic terms of the energy with respect to the perturbation of the noise) of a particle shuttled by an optical lattice that moves acco…
A linearly implicit structure-preserving scheme for the fractional sine-Gordon equation based on the IEQ approach
Yayun Fu, Wenjun Cai, Yushun Wang
This paper aims to develop a linearly implicit structure-preserving numerical scheme for the space fractional sine-Gordon equation, which is based on the newly developed invariant…
Fast shuttling of a particle under weak spring-constant noise of the moving trap
Xiao-Jing Lu, A. Ruschhaupt, J. G. Muga
We investigate the excitation of a quantum particle shuttled in a harmonic trap with weak springconstant colored noise. The Ornstein-Uhlenbeck model for the noise correlation funct…