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相关概念视频

Time and frequency -Domain Interpretation of Phase-lag Control01:21

Time and frequency -Domain Interpretation of Phase-lag Control

120
Phase-lag controllers are widely used in control systems to improve stability and reduce steady-state errors. A dimmer switch controlling the brightness of a light bulb serves as a practical example of phase-lag control, gradually adjusting the bulb's brightness. Mathematically, phase-lag control or low-pass filtering is represented when the factor 'a' is less than 1.
Phase-lag controllers do not place a pole at zero, but instead influence the steady-state error by amplifying any...
120

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使用频率量子位和被动设备进行线性光学量子计算.

Tomohiro Yamazaki1,2, Tomoaki Arizono1, Toshiki Kobayashi1,2

  • 1Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka 560-8531, Japan.

Physical review letters
|June 2, 2023
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概括
此摘要是机器生成的。

我们介绍了一种使用时间频率属性的线性光学量子计算方法. 这种方法在光子频率中编码量子位,并使用基本光学组件,为潜在的容错量子计算提供对错误的稳定性.

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科学领域:

  • 量子信息科学 量子信息科学
  • 量子光学是一种量子光学.
  • 线性光学量子计算 线性光学量子计算

背景情况:

  • 量子计算利用量子现象进行先进的计算.
  • 线性光学量子计算 (LOQC) 提供了一个有希望的,尽管具有挑战性的途径.
  • 可扩展性和错误稳定性是LOQC开发中的关键障碍.

研究的目的:

  • 提出一个新的线性光学量子计算方案.
  • 利用时间频率自由度来编码和操纵量子比特.
  • 评估方案的可行性,使用当前的技术.

主要方法:

  • 在单光子频率中编码量子比特.
  • 利用时间解析探测器,光束分割器和光学交叉器进行量子比特操纵.
  • 分析该方案对时间和光谱错误的稳定性.

主要成果:

  • 使用频率子演示了一个量子比特编码方案.
  • 通过被动光学元件和时间解析探测器展示了操纵.
  • 识别了对探测器诱导的时间和光谱错误的稳定性.

结论:

  • 拟议的方案提供了一种被动和强大的量子计算方法.
  • 目前的技术正在接近使用这种方法实现容错量子计算的要求.
  • 这项工作为线性光学量子计算的实际进展铺平了道路.