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相关概念视频

Types of Semiconductors01:20

Types of Semiconductors

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Intrinsic semiconductors are highly pure materials with no impurities. At absolute zero, these semiconductors behave as perfect insulators because all the valence electrons are bound, and the conduction band is empty, disallowing electrical conduction. The Fermi level is a concept used to describe the probability of occupancy of energy levels by electrons at thermal equilibrium. In intrinsic semiconductors, the Fermi level is positioned at the midpoint of the energy gap at absolute zero. When...
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相关实验视频

Updated: Jan 9, 2026

Demonstration of Spin-Multiplexed and Direction-Multiplexed All-Dielectric Visible Metaholograms
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从二维材料-混合芯片生成可见的二次波.

Xuncheng Shi, Kunze Lu, Gwangmin Yu

    Optics letters
    |December 1, 2025
    PubMed
    概括

    研究人员开发了一种混合光子芯片,用于使用二维材料发射可见光. 这一突破使得芯片上可见光源成为量子计算和技术至关重要的可见光源.

    科学领域:

    • 光子学 是一个光子学.
    • 量子技术 量子技术是一种量子技术.
    • 材料科学 材料科学 材料科学

    背景情况:

    • 光子集成电路 (PIC) 对量子系统至关重要.
    • 标准的PIC不能在可见波长下工作,因为吸收率很高.
    • 对于先进的量子应用,如被困离子量子计算机,需要可见光源.

    研究的目的:

    • 为可见光发射提供一种新的混合PIC平台.
    • 为了克服对可见光传播的吸收限制.
    • 为了启用CMOS兼容的芯片内可见光源.

    主要方法:

    • 开发了一个混合的二维 (2D) 集成在绝缘体 (SOI) PIC平台.
    • 使用的单层化 (WSe2) 被封装在六角化 (hBN) 中.
    • 用于用于平面外可见光发射的第二波生成 (SHG).

    主要成果:

    • 通过WSe2.2的SHG实现了外平面可见光发射.
    • 通过使用对波导透明的红外光绕过吸收.
    • 在接口上的2D材料内局部非线性频率转换.

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    结论:

    • 在芯片上展示了CMOS兼容可见光源的可行途径.
    • 混合2D/SOI平台解决了量子技术中的关键需求.
    • 这种方法可以有效地产生可见光,而不需要依靠来传播可见光.