实验演示一个强大的,高保真度的几何两个离子量子比特相门的实验演示
D Leibfried1, B DeMarco, V Meyer
1Time and Frequency Division, National Institute of Standards and Technology, 325 Broadway, Boulder, Colorado 80305, USA.
Nature
|March 28, 2003
概括
研究人员展示了两个离子量子位的通用几何Pi相门. 这种量子计算的进步实现了97%的忠实度,改进了以前创建纠状态的方法.
科学领域:
- 量子信息科学 量子信息科学
- 原子物理 原子物理
- 量子计算是一种量子计算.
背景情况:
- 万能逻辑门对于量子计算至关重要.
- 几何相位门比动态门具有优势,包括更高的抗错率和更快的实现.
- 被困离子是量子计算的一个有前途的平台.
研究的目的:
- 展示两个离子量子位之间的通用几何Pi相门.
- 为了实现离子量子位的高保真性纠.
- 探索扩展量子计算架构的潜力.
主要方法:
- 利用由光学双极力诱导的连贯位移来创建一个几何的pi相门.
- 与单个量子比特旋转相结合,应用了网关.
- 专注于内部原子状态,在特定条件下运动状态不那么关键.
主要成果:
- 成功演示了两个离子量子位之间的通用几何Pi相门.
- 在准备纠的贝尔状态时达到97%的保真度,这与之前的实验相比是显著的改进.
- 门的特性适用于多重陷架构.
结论:
- 展示的几何Pi相门是使用被困离子进行可扩展量子计算的关键一步.
- 使用这种方法可以实现高保真性纠生成.
- 这种方法对推进量子计算硬件有前途.
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