合肥工业大学周辉研究组报道了退相干不敏感空间中的非绝热完整量子门。这一研究成果发表在2025年2月18日出版的国际学术期刊《物理评论A》上。

据介绍，非绝热完整量子计算（NHQC）在减轻控制误差方面显示出希望，但需要额外的方法来进一步消除退相干误差的影响。现有的NHQC方案能够对抗这两种类型的错误，通常需要辅助量子位，从而增加量子位电阻消耗。

 本文提出了一种基于三能级修饰态空间的非绝热完整量子门，它对退相干具有固有的不敏感性，并且消除了对辅助量子比特的需要。通过数值模拟，所提出的门在修饰态框架内显示出，对控制场误差和退相干误差的增强抵抗。

此外，研究人员还在金刚石的氮空位中心上实现了他们的方法，证明了其在几何量子计算中的可行性和潜力。

附：英文原文

Title: Nonadiabatic holonomic quantum gates in a decoherence-insensitive space

Author: Fangzhou Jin, Jianpei Geng, Hui Zhou

Issue&Volume: 2025/02/18

Abstract: Nonadiabatic holonomic quantum computation (NHQC) has shown promise in mitigating control errors, but requires additional methods to further eliminate the effects of decoherence errors. Existing NHQC schemes capable of combating both types of errors often necessitate auxiliary qubits, thereby increasing qubit resource consumption. This paper proposes nonadiabatic holonomic quantum gates based on a three-level dressed state space, which have inherent insensitivity to decoherence and eliminate the need for auxiliary qubits. Through numerical simulations, the presented gates within the dressed-state framework display enhanced resistance to both control field errors and decoherence errors. Moreover, we discuss the implementation of our approach on the nitrogen-vacancy center in diamond, demonstrating its feasibility and potential for geometric quantum computation.

DOI: 10.1103/PhysRevA.111.022620

Source: https://journals.aps.org/pra/abstract/10.1103/PhysRevA.111.022620