将量子处理器与实时经典通信相结合
Almudena Carrera Vazquez1, Caroline Tornow1,2, Diego Ristè3
1IBM Quantum, IBM Research Europe - Zurich, Rüschlikon, Switzerland.
Nature
|November 20, 2024
概括
研究人员通过实时经典连接实验连接了两个量子处理器. 通过克服硬件的局限性,从而创造出更大,更灵活的量子状态.
科学领域:
- 量子计算
- 量子信息科学
背景情况:
- 目前的量子硬件受到杂的量子位,短的连贯时间和平面连接的限制.
- 许多量子应用需要比单个量子处理单元 (QPU) 更大的量子位连接和更多的量子位.
- 通过古典通信连接多个QPU是一个建议的解决方案,但缺乏实验证据.
研究的目的:
- 用多个QPU实验证明需要定期连接的量子状态的产生.
- 验证用于增强量子计算的减误动态电路和电路切割.
- 为条件量子门操作建立实时的QPU之间的经典链接.
主要方法:
- 实现了基于中路测量的动态电路.
- 利用电路切割在多个量子处理单元 (QPU) 上构建量子状态.
- 建立了连接两个QPU (每个为127个量子位) 的实时经典链接,以实现QPU之间的条件操作.
主要成果:
- 通过两个QPU成功创建了需要定期连接的量子状态.
- 根据测量结果,在QPU之间进行实时条件量子门操作.
- 通过减少错误的控制流展示了增强的量子位连接和指令集.
结论:
- 可以将多个量子处理器集成到一个更强大的量子计算机中.
- 通过实时经典链接实现的减错动态电路显著提高了量子计算的多功能性和可扩展性.
- 这种实验实现为解决以前由于硬件限制而难以解决的复杂量子问题铺平了道路.
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