Description

2011/11/08, Frank Wilhelm (Saarland University, Germany)

Place:  Sala de Seminarios del Departamento de Física Teórica e Historia de la Ciencia
Time: 12h
Title: Optimal gates in imperfect qubits

Abstract

Designing and operating a quantum computer is subject to a multitude of opposing challenges. In particular, scalable and decoherence-protected solid state quits seem to, at first glance, be very flexible and hard to control. We are going to show how optimal control theory can be used to find pulse shapes for implementing precise and fast gates. Some of these results such as the DRAG technique that avoids leakage to non-computational states can be motivated analytically in a toggling frame.