Li Wang

TL;DR: This work demonstrates complete control of the quantum-dot charge qubit on the picosecond scale, orders of magnitude faster than the previously measured electrically controlled charge- or spin-based qubits.

TL;DR: This work demonstrates non-adiabatic quantum operations for a two-level system by applying a well-controlled geometric Landau-Zener-Stückelberg interferometry and characterizes the gate quality, which provides an essential model suitable for understanding an interplay of geometric phase and Landau/Zener process which are well explored separately.

TL;DR: In this article, the authors proposed an effective method to design the working parameters of a pulse-driven charge qubit implemented with double quantum dot and demonstrated that intrinsic qubit population leakage to undesired states in the control and measurement process can be determined by the simulation of coherent dynamics of the qubit and minimized by choosing proper working parameters such as pulse shape.

TL;DR: Graphene has been proclaimed to be a new revolutionary material for electronics as discussed by the authors, and in particular, graphene-based transistors have developed rapidly and are now considered an option for post-silicon electronics.