An architecture for two-qubit encoding in neutral ytterbium-171 atoms

IF 6.6 1区 物理与天体物理 Q1 PHYSICS, APPLIED npj Quantum Information Pub Date : 2024-11-02 DOI:10.1038/s41534-024-00898-7
Zhubing Jia, William Huie, Lintao Li, Won Kyu Calvin Sun, Xiye Hu, Aakash, Healey Kogan, Abhishek Karve, Jong Yeon Lee, Jacob P. Covey
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Abstract

We present an architecture for encoding two qubits within the optical “clock” transition and nuclear spin-1/2 degree of freedom of neutral ytterbium-171 atoms. Inspired by recent high-fidelity control of all pairs of states within this four-dimensional quotes space, we present a toolbox for intra-ququart (single-atom) one- and two-qubit gates, inter-ququart (two-atom) Rydberg-based two- and four-qubit gates, and quantum nondemolition (QND) readout. We then use this toolbox to demonstrate the advantages of the ququart encoding for entanglement distillation and quantum error correction which exhibit superior hardware efficiency and better performance in some cases since fewer two-atom operations are required. Finally, leveraging single-state QND readout in our ququart encoding, we present a unique approach to studying interactive circuits and to realizing a symmetry protected topological phase of a spin-1 chain with a shallow, constant-depth circuit.

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中性镱-171 原子中的双量子比特编码架构
我们提出了一种在中性镱-171 原子的光学 "时钟 "转变和核自旋-1/2 自由度内编码两个量子比特的架构。受最近对这个四维引文空间内所有态对进行高保真控制的启发,我们提出了一个工具箱,用于量子位内(单原子)一量子位门和二量子位门、量子位间(双原子)基于雷德堡的二量子位门和四量子位门,以及量子非拆卸(QND)读出。然后,我们利用这个工具箱展示了纠缠蒸馏和量子纠错的夸特编码的优势,在某些情况下,由于需要较少的双原子操作,夸特编码表现出更高的硬件效率和更好的性能。最后,利用夸特编码中的单态 QND 读出,我们提出了一种独特的方法来研究交互电路,并通过浅层恒定深度电路实现自旋-1 链的对称保护拓扑相位。
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来源期刊
npj Quantum Information
npj Quantum Information Computer Science-Computer Science (miscellaneous)
CiteScore
13.70
自引率
3.90%
发文量
130
审稿时长
29 weeks
期刊介绍: The scope of npj Quantum Information spans across all relevant disciplines, fields, approaches and levels and so considers outstanding work ranging from fundamental research to applications and technologies.
期刊最新文献
Qubit teleportation between a memory-compatible photonic time-bin qubit and a solid-state quantum network node An architecture for two-qubit encoding in neutral ytterbium-171 atoms Data needs and challenges for quantum dot devices automation Extending radiowave frequency detection range with dressed states of solid-state spin ensembles Robust projective measurements through measuring code-inspired observables
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