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发布人:liulin 发布日期?019-04-18 浏览量:





摘要:Adiabatic quantum computation requires keeping a system in a particular eigenstate. However, unwanted transitions can occur due to the interaction of the system with a noisy environment. The adiabatic evolution of the system will then be ruined. To reduce the effect of the environment, quantum control methods can be used. This allows one to speed up the adiabatic process. Here we report an effective control scheme to allow for a speedup of the adiabatic process by using a sequence of pulses on the system. Using the hierarchical functional derivative (HFD) approach, we calculate the fidelity evolution, which is a measure of the adiabaticity in an open system. By carefully choosing the pulse intensity and duration, an accelerated adiabatic path can be obtained for both a weak-coupling and a strong non-Markovian environment.


王兆明教授已在SCI杂志上发表论?0余篇,被引用300余次,其中以第一作者在Phys. Rev. A发表论文 10 篇。曾获山东省高等学校优秀科研成果奖。主持包括国家自然科学基金,山东省自然科学基金等科研项目4项?/p>