该研究团队提出一个用于量子计算的离子-原子混合量子系统的玩具模型。研究人员证明,当两个位于相距甚远的光镊中的原子量子比特,通过原子的里德伯激发与单个囚禁离子相互作用时,会存在一种由离子介导的原子-原子相互作用,这种相互作用在较大间距时超过了原子间的直接相互作用。
研究人员利用这种介导相互作用,通过激光对单个原子量子比特进行寻址,实现了保真度为97%的两量子比特受控相位门操作。
附:英文原文
Title: Ion-mediated interaction and controlled-phase-gate operation between two atomic qubits
Author: Subhra Mudli*, Subhanka Mal*, Sinchan Snigdha Rej, Anushree Dey, and Bimalendu Deb†
Issue&Volume: 2024-12-24
Abstract: We propose a toy model of ion-atom hybrid quantum system for quantum computing. We show that when two atomic qubits in two largely separated optical tweezers interact with a single trapped ion through Rydberg excitation of the atoms, there exists an ion-mediated atom-atom interaction which exceeds the direct interatomic interaction at large separation. We employ this mediated interaction to demonstrate a two-qubit control phase-gate operation with 97% fidelity by addressing the individual atomic qubits with lasers.
DOI: 10.1103/PhysRevA.110.062618
Source: https://journals.aps.org/pra/abstract/10.1103/PhysRevA.110.062618
Physical Review A:《物理评论A》,创刊于1970年。隶属于美国物理学会,最新IF:2.97
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