TheBlinQC

点击翻译按钮获取中文摘要

Accurate control of complex quantum systems is of great importance for the development ofquantum technologies, as it permits to achieve many goals with high accuracy despite inherentsystem imperfections. Realising this in practice, however, is a great challenge, since it requiresprecise models and numerically expensive simulations.The central goal of this project is to develop and implement control techniques that do notrequire theoretical modelling, simulation or any knowledge of a systems' microscopicdecomposition. Instead, all necessary information will be obtained directly from the experiment.We will identify control targets that characterise desired properties of quantum systems well,and that can be estimated accurately and efficiently in an experiment. Based on theassessment of these targets and their dependence on tunable control parameters, we willdevelop control algorithms such that an optimal control protocol is found within a minimalnumber of experimental measurements.These methods will be developed in direct interplay between simulations of experiments withmany--body systems and actual experimental implementations. In simulations we will target thecreation and stabilisation of many--body localised states and time--crystalline structures, thatwill give evidence that the novel control techniques can cope with state--of--the--art quantummany--body problems. Experimentally we will consider the preparation of highly non--classicalstates of a levitated nano--sphere and the formation of large crystals of Rydberg atoms. Withan experiment on an extremely massive quantum object and an experiment with many,strongly interacting quantum systems, we will be able to experimentally achieve goals that areclearly out of reach with existing control techniques.Having verified the efficacy of the control techniques, we will develop a software package andmake it publicly available such that it finds broad application in the development of quantumtechnologies.