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相关概念视频

Metal-Semiconductor Junctions01:24

Metal-Semiconductor Junctions

395
The contact of metal and semiconductor can lead to the formation of a junction with either Schottky or Ohmic behavior.
Schottky Barriers
Schottky barriers arise when a metal with a work function (Φm) contacts a semiconductor with a different work function (Φs). Initially, electrons transfer until the Fermi levels of the metal and semiconductor align at equilibrium. For instance, if Φm > Φs, the semiconductor Fermi level is higher than the metal's before contact. The...
395
Biasing of Metal-Semiconductor Junctions01:27

Biasing of Metal-Semiconductor Junctions

289
Biasing metal-semiconductor junctions involves applying a voltage across the junction. Specifically, the metal is connected to a voltage source, while the semiconductor is grounded. This technique is essential for controlling the direction and magnitude of current flow in electronic devices, including diodes, transistors, and photovoltaic cells.
In Schottky junctions, where the semiconductor is n-type, applying a positive voltage to the metal relative to the semiconductor reduces its Fermi...
289

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相关实验视频

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Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source
12:19

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基于adiabatic合器的高效化波导交叉,用于光子量子计算的量子计算.

Timo Sommer, Nirav Mange, Peter Wegmann

    Optics letters
    |June 1, 2023
    PubMed
    概括

    对于光学量子计算来说,已经证明了高效的附带波导交叉 (WgX). 这些交叉提供了比传统合器更好的性能,使高保真度量子操作具有低插入损失.

    科学领域:

    • 综合光子学 综合光子学
    • 量子计算是一种量子计算.
    • 波导技术的技术波导技术.

    背景情况:

    • 光学量子计算协议,例如使用双轨编码的协议,对于SWAP和Toffoli等必不可少的门操作,需要波导交叉.
    • 现有的波导交叉设计在光谱工作范围和对制造变化的稳定性方面存在挑战.

    研究的目的:

    • 为了展示集成光学量子计算的高效的亚亚巴特波导交叉.
    • 描述这些交叉路口的性能,重点关注合,插入损失和操作保真.

    主要方法:

    • 通过模拟,阐明了附带交叉路口的工作原理.
    • 使用化 (SiN) 的测试电路被制造出来,以实验性地评估合性能和插入损失.
    • 用直接传输测量和纳入微环共振器来测量插入损失.

    主要成果:

    • 与正常定向合器相比,亚亚巴特波导交叉 (WgX) 具有更高的光谱工作范围和制造变异稳定性.
    • 微环共振器方法在表征低损耗光子组件方面被证明是非常有效的.
    • 实现的最小插入损失为0.18dB (4.06%),促进了高保真度量子NOT操作.

    结论:

    更多相关视频

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  • 已证明的亚底波导交叉是集成光子量子计算机中高保真度量子操作的关键推动因素.
  • 开发的WgX技术实现了96.2%的高保真量子NOT操作.
  • 这一进步有助于开发强大的和可扩展的光学量子计算架构.