用超导量子处理器演示两个量子比特算法
L DiCarlo1, J M Chow, J M Gambetta
1Department of Physics, Yale University, New Haven, Connecticut 06511, USA.
Nature
|June 30, 2009
概括
研究人员开发了一个两量子比特超导量子处理器,展示了关键的量子算法. 这种固态进步对于可扩展的量子计算和集成电路至关重要.
科学领域:
- 量子计算是一种量子计算.
- 固态物理 固态物理
- 超导电路中的超导电路.
背景情况:
- 量子计算机利用叠加和纠来解决复杂的问题.
- 构建可扩展的量子处理器在量子比特连贯性,门操作和读出方面面临挑战.
- 以前的几量子比特处理器使用了NMR,离子陷和光学系统,但固态实现仍然难以捉摸.
研究的目的:
- 为了演示一个功能性的两量子比特超导量子处理器.
- 在固态平台上实现格罗弗搜索和德意志-乔萨量子算法.
- 推进集成量子电路的发展.
主要方法:
- 利用了一个电路量子电动学架构,通过空腔总线调节可调的两量子比特相互作用.
- 在纳米秒时间尺度上,控制量子比特相互作用强度超过两个数量级.
- 在量子比特的初始化注册表中应用了可编程的门序列.
主要成果:
- 成功演示了一个两量子比特超导量子处理器.
- 实施了格罗弗搜索和德意志-乔萨量子算法.
- 产生了高度纠的国家,竞争率高达94%.
结论:
- 这款两量子比特超导处理器代表了在集成电路中实现可扩展量子计算的重要一步.
- 对于实用的量子技术,对量子比特连贯时间,门忠度和寄存器大小的进一步改进是必要的.
- 可调的交互机制是产生高水平纠的关键.
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