近日，巴西圣保罗大学的Adonai Hilário da Silva及其研究团队与法国勃艮第大学的Bruno Bellomo等人合作并取得一项新进展。经过不懈努力，他们发现时变拉比频率能够通过连续动态解耦保护原子量子三比特上的量子操作。相关研究成果已于2024年3月13日在国际知名学术期刊《物理评论A》上发表。

该研究团队深入探究了一个过程中的时变拉比频率所需的具体形式，这个过程旨在通过外部场的连续作用，有效解耦系统与环境噪声，从而保护量子门对原子量子三比特的影响。研究人员考虑了几种模拟来保护量子门模型的作用，包括随机选择的模型。研究人员认为对拉比频率的要求可以在实验上得到满足。

此外，研究人员还深入探讨了从一个门操作到另一个门操作的转换过程，其中涉及到了对量子三比特存储器状态的保护。最终，他们成功应用了该方法来抵御噪声，使应用算法能够区分三个元素的排列奇偶性。

附：英文原文

Title: Time-dependent Rabi frequencies to protect quantum operations on an atomic qutrit by continuous dynamical decoupling

Author: Adonai Hilário da Silva, Reginaldo de Jesus Napolitano, Felipe Fernandes Fanchini, Bruno Bellomo

Issue&Volume: 2024/03/13

Abstract: We investigate the form required for the time-dependent Rabi frequencies involved in a procedure capable to protect the action of quantum gates on an atomic qutrit by means of external fields continuously decoupling the system from the environmental noise. Several simulations are considered to protect the action of quantum-gate models, including randomly chosen ones. We argue that the requirements for the Rabi frequencies could be nowadays experimentally met. We also investigate the transition from one gate operation to another, including protecting a qutrit memory state. We finally apply our methodology to protect from noise the application of an algorithm capable of distinguishing the parity of permutations of three elements.

DOI: 10.1103/PhysRevA.109.032611

Source: https://journals.aps.org/pra/abstract/10.1103/PhysRevA.109.032611