捕获离子量子比特的多元件逻辑门
T R Tan1, J P Gaebler1, Y Lin1
1National Institute of Standards and Technology, 325 Broadway, Boulder, Colorado 80305, USA.
Nature
|December 18, 2015
概括
研究人员开发了一种用于混合离子系统的新型量子门,使先进的量子信息处理和网络成为可能. 这种混合元素门对于构建强大的量子技术和证明量子相关性至关重要.
科学领域:
- 量子信息科学
- 原子物理
- 量子计算
背景情况:
- 通过整合多种量子元素, 混合量子系统提供了增强的控制.
- 不同元素的被困离子已经被用于像同情冷却和纠生成这样的任务.
- 之前的混合元素离子实验为先进的量子控制奠定了基础.
研究的目的:
- 在不同元素的离子之间展示一种新的纠量子门.
- 建立量子信息处理 (QIP) 和量子网络的关键构建块.
- 探索精密光谱学,计量学和量子模拟中的应用.
主要方法:
- 在-9和-25离子之间实现几何相门.
- 使用激光束诱导的状态依赖力产生有效的旋转-旋转相互作用.
- 实现单量子位门和同种纠门的通用QIP.
主要成果:
- 混合元件纠门的演示,用于混合系统中的通用QIP.
- 通过新网关成功实施CNOT (受控NOT) 和SWAP网关.
- 在量子逻辑光谱学中对门的耐热性和改进的检测.
- 使用不同的离子物种,对CHSH (克劳瑟-霍恩-西蒙尼-霍尔特) 类型贝尔不等式的强烈违反的观察.
结论:
- 开发的混合元素纠门是混合量子系统的重大进步.
- 这一门将促进与不同离子物种的通用量子信息处理和网络.
- 这些发现为增强量子模拟,计量学和量子力学的基本测试铺平了道路.
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