Trapped Ion Quantum Computing Correcting Errors in the Molmer-Sorensen Gat

点击翻译按钮获取中文摘要

Trapped ions make a promising candidate for scalable quantum computers.The IQT group uses trapped ytterbium ions in a magnetic field gradient. Anyquantum computer will require high fidelity gate to reduce the number of additionalqubits required for implementing error correction codes. When performinga quantum gate it is prone to different sources of error, some of which are intrinsic.There also exist environmental errors such as heating, and finally errors due toincorrect control parameters. This thesis concentrates on correcting errors in control parameters, more specifically symmetric and asymmetric detuning errors. Simulations of the two qubit Molmer-Sorensen gate show that errors of less than _2.5 Hz for symmetric and _5 Hz for asymmetric detunings are required to achieve 99.9% fidelities. A method is proposed to correct for these errors, which consists of three successive detuning scans. This thesis finally explains how procedures such as the one put forth are carried out experimentally.