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超导量子电路在表面代码的故障容忍值.

R Barends1, J Kelly1, A Megrant2

  • 11] Department of Physics, University of California, Santa Barbara, California 93106, USA [2].

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概括
此摘要是机器生成的。

超导量子比特展示了高可靠性的量子逻辑门,达到表面代码错误校正的容错值. 这一进步为使用约瑟夫森量子技术的可扩展,容错量子计算铺平了道路.

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科学领域:

  • 量子计算是一种量子计算.
  • 超导电路中的超导电路
  • 量子错误纠正方法 量子错误纠正方法

背景情况:

  • 量子计算机有望解决复杂的问题,但需要对脆弱的量子状态进行强有力的保护.
  • 量子错误校正,利用纠,在多个量子位上保护逻辑状态.
  • 超导能使量子电路的大规模和量子比特开发的微制造成为可能.

研究的目的:

  • 在超导多量子比特处理器中展示一组通用逻辑门.
  • 为了评估量子门对表面代码错误校正的忠实性.
  • 为了推动约瑟夫森量子计算向容错架构发展.

主要方法:

  • 实现一个具有近邻合的五量子比特处理器.
  • 在超导量子比特上执行一组通用逻辑门.
  • 构建一个五个量子比特的格林伯格-霍恩-齐林格状态.

主要成果:

  • 实现了 99.92% 的平均单量子比特网关保真率.
  • 达到了两个量子比特门的保真率高达99.4%.
  • 在表面代码的容错门上演示了约瑟夫森量子计算.

结论:

  • 约瑟夫森量子计算是一种高保真技术.
  • 证明的忠实度符合表面代码错误校正的要求.
  • 这项工作代表了向可扩展,耐故障的量子电路迈出的重要一步.