全球基于测量的量子计算在一维架构中,由双单元电路实现
David T Stephen1,2, Wen Wei Ho3,4, Tzu-Chieh Wei5,6
1Department of Physics and Center for Theory of Quantum Matter, <a href="https://ror.org/02ttsq026">University of Colorado Boulder</a>, Boulder, Colorado 80309 USA.
Physical review letters
|July 12, 2024
概括
双单元电路为基于测量的量子计算 (MBQC) 提供了一个新的框架. 这种方法有效地在空间上执行量子计算,为通用MBQC和新的拓阶段生成资源状态.
科学领域:
- 量子信息科学 量子信息科学
- 凝聚物质物理学 凝聚物质物理学
- 量子计算是一种量子计算.
背景情况:
- 双单元电路是多体量子力学中的一个强大的工具.
- 这些电路即使在空间测量时也表现出单元性.
- 基于测量的量子计算 (MBQC) 是量子计算的领先范式.
研究的目的:
- 建立双单元电路作为理解和扩展MBQC的理想框架.
- 为了证明双单元动态如何实现空间量子计算.
- 探索双单元电路,MBQC资源状态和拓阶段之间的联系.
主要方法:
- 将双单元电路应用于多体状态,然后进行测量.
- 利用特定参数的单维被的Ising链的动态.
- 分析由此产生的状态作为普遍决定性MBQC的资源.
主要成果:
- 双单元电路有效地在空间方向上实现量子计算.
- 被的Ising链动态产生了普遍MBQC的资源状态.
- 在k个时间步骤后,通过大约3k/4个编码量子比特实现了深度k的量子电路.
- 该协议允许量子电路的时空旋转,从而实现资源权衡.
结论:
- 双单元电路为MBQC提供了一种新而强大的方法.
- 该协议产生了大量集群状态的概括,导致了新的对称性保护的拓阶段.
- 这项工作为管理量子计算机中的量子位数和连贯时间等资源提供了新的方法.
- 开发的协议是强大的对称性尊重变形.
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