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Ampere-Maxwell's Law: Problem-Solving01:17

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A parallel-plate capacitor with capacitance C, whose plates have area A and separation distance d, is connected to a resistor R and a battery of voltage V. The current starts to flow at t = 0. What is the displacement current between the capacitor plates at time t? From the properties of the capacitor, what is the corresponding real current?
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Werner Heisenberg considered the limits of how accurately one can measure properties of an electron or other microscopic particles. He determined that there is a fundamental limit to how accurately one can measure both a particle’s position and its momentum simultaneously. The more accurate the measurement of the momentum of a particle is known, the less accurate the position at that time is known and vice versa. This is what is now called the Heisenberg uncertainty principle. He...
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量子计算机的物理约束硬件高效方法是普遍的,系统地无法证明的,并且与大小一致的量子计算机.

Xiaoxiao Xiao1, Hewang Zhao1, Jiajun Ren1

  • 1Key Laboratory of Theoretical and Computational Photochemistry, Ministry of Education, College of Chemistry, Beijing Normal University, Beijing 100875, China.

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此摘要是机器生成的。

我们开发了一种新的受物理限制的方法来设计量子计算机的硬件效率分析 (HEA). 这种方法确保了复杂的量子多体问题的准确性和可扩展性.

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科学领域:

  • 量子计算是一种量子计算.
  • 计算物理学的计算物理.
  • 量子化学是一种量子化学.

背景情况:

  • 变量波函数的原理对于解决量子多体问题至关重要.
  • 现有的硬件效率分析 (HEA) 往往缺乏理论严谨性和可扩展性.
  • 以前的HEA设计忽视了诸如尺寸一致性等关键概念.

研究的目的:

  • 引入物理限制的方法来设计HEA,并提供理论上的保证.
  • 确保HEA是普遍的,可以系统地改进的,并且与尺寸一致.
  • 为了提高量子计算机上的量子多体模拟的准确性和可扩展性.

主要方法:

  • 对HEA设计施加了基本的物理约束 (普遍性,系统改进性,尺寸一致性).
  • 将大小一致性的概念扩展到硬件效率的概念.
  • 开发了一个具体的HEA实现,只需要线性量子位连接.

主要成果:

  • 与启发式设计相比,受物理限制的HEA表现出卓越的准确性和可扩展性.
  • 恢复尺寸一致性可以显著减少所需精度所需的层数量.
  • 启发式HEA由于约束违规而难以扩展到10个量子比特以外的可扩展性.

结论:

  • 整合物理约束对于设计高效的HEA至关重要.
  • 开发的受物理限制的HEA为解决量子多体问题提供了一个强大的框架.
  • 这种方法推进了量子计算在物理和化学中的实际应用.