绝热捷径技术在纠缠制备中的对比研究

为对比Lewis -Riesenfeld(LR)不变量、无跃迁量子驱动、超绝热迭代和缀饰态4种绝热捷径技术在制备纠缠态时的性能,在介绍LR不变量、无跃迁量子驱动、超绝热迭代以及缀饰态的基础上,基于控制变量的物理思想从多角度对比分析了这4种绝热捷径技术在制备纠缠态时的优缺点.对比结果表明,这4种绝热捷径技术均能快速实现高保真度和对环境鲁棒的纠缠,但由于构建绝热捷径的方式不同,这4种绝热捷径技术均存在不同的限制.因此,对于不同的实验要求和实验条件,应灵活选择不同的绝热捷径技术.

A comparative study on shortcut - to - adiabaticity techniques in the generation of entangled states

In order to compare the performance of four shortcut - to - adiabaticity techniques, including Lewis-Riesenfeld(LR)invariant, transitionless quantum driving, superadiabatic iterations and dressed state, in the generation of entanglement, based on the introduction of LR invariant, transitionless quantum driving, superadiabatic iterations and dressed state, the advantages and disadvantages of these four shortcuts to adiabaticity are compared in the preparation of entangled states from multiple perspectives based on the physical ideas of control variable. The results indicate that all four kinds of shortcut -to -adiabaticity schemes can quickly achieve the entanglement of high fidelity and robust to the environment, however, they have different limitations due to the different ways of constructing shortcut to adiabaticity. Therefore, for different experimental requirements and conditions, different techniques should be selected flexibly.