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在单层WSe₂中通过局部应变工程来动态调整单光子发射

Yi Yu¹, Junyu Ge², Manlin Luo¹

¹School of Electrical and Electronic Engineering, Nanyang Technological University (NTU), Singapore 639798.

|February 18, 2025

概括

研究人员使用局部应变精确调整了WSe2单层中单光子发射器 (SPE) 的发射能量. 这种方法可以为量子应用匹配多个SPE.

科学领域:

凝聚物质物理学凝聚物质物理学
材料科学材料科学材料科学
量子光学是一种量子光学.

背景情况:

二维 (2D) 材料对单光子发射器 (SPE) 是有前途的.
辐射能量的变化阻碍了需要相同的单个光子的实际量子应用.
目前调整和匹配2D SPEs的方法有限.

研究的目的:

为了证明WSe2单层中的单个SPEs的精确,按需的排放能量调整.
为解决量子技术的二维材料的光谱变异性挑战.
为了展示多个SPE的实际调整.

主要方法:

在WSe2单层中,利用在单个SPEs附近的局部应变场.
通过激光火来调整压力层的体积来控制应变.
描述SPE特性和排放能量转移.

主要成果:

实现了单个SPE的连续排放能量调整,最高可达15 meV.
在调音过程中保持了SPE的高质量.
在一个单一的WSe2单层中,证明了三种不同的SPEs在同一波长上的精确光谱对齐.

结论:

局部应变,由激光化应力器控制,为2D SPEs精确的排放能量调节提供了一种实用方法.
这种技术促进了多个SPE的光谱匹配,这对于集成量子光子电路至关重要.
该方法克服了用于可扩展量子应用的2D材料的关键局限性.

关键词:

一个单层WSe2单层.动态波长可调性可调性激光火是一种激光火.单光子发射器是一个光子发射器.应变工程是一种应变工程.

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