Optically Active Single Hole Spin in ZnSe

IF 9.1 1区材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Nano Letters Pub Date : 2026-10-12 DOI:10.1021/acs.nanolett.6c03982

Amirehsan Alizadehherfati,Yuxi Jiang,Kelsey J. Mirrielees,Nils von den Driesch,Christine Falter,Yurii Kutovyi,Amirehsan Boreiri,Douglas L. Irving,Alexander Pawlis,Edo Waks

引用次数: 0

Abstract

Semiconductor hole spins offer a pathway to extended coherence times by decoupling from nuclear magnetic noise, while their spin–orbit coupling enables fast all-electrical control. In ZnSe, however, realizing this potential has been limited by p-doping challenges. Here, we circumvent this limit by optically activating acceptors and demonstrate optical spin initialization. We isolate a single-hole spin bound to a shallow acceptor, confirmed by antibunching and accessed via the fast (244 ps) radiative recombination of a bound exciton. Magnetic and Raman spectroscopy reveal a spin-selective Λ system with an effective hole g-factor of 0.7 and an optical line width of 26.7 GHz. Time-resolved measurements reveal optical pumping of the hole spin with an estimated initialization fidelity of 90.7%. First-principles simulations combined with the experiment identify nitrogen as the most likely acceptor impurity. These results introduce a promising new platform for optically active spin qubits and single-photon sources in ZnSe.

Abstract Image

查看原文本刊更多论文

ZnSe中光活性单孔自旋

半导体空穴自旋通过从核磁噪声中解耦提供了延长相干时间的途径，而它们的自旋轨道耦合实现了快速的全电控制。然而，在ZnSe中，实现这一潜力受到p掺杂挑战的限制。在这里，我们通过光激活受体并演示光自旋初始化来绕过这一限制。我们分离了一个单孔自旋束缚在一个浅受体上，通过反聚束确认，并通过一个束缚激子的快速（244ps）辐射重组获得。磁谱和拉曼光谱结果表明，该系统具有自旋选择性，有效空穴g因子为0.7，光谱线宽为26.7 GHz。时间分辨的测量结果显示，光抽运的空穴自旋估计初始保真度为90.7%。第一性原理模拟与实验相结合，确定氮是最可能的受体杂质。这些结果为ZnSe的光学活性自旋量子比特和单光子源提供了一个有前途的新平台。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Nano Letters 工程技术-材料科学：综合

CiteScore

16.80

自引率

2.80%

发文量

1182

审稿时长

1.4 months

期刊介绍： Nano Letters serves as a dynamic platform for promptly disseminating original results in fundamental, applied, and emerging research across all facets of nanoscience and nanotechnology. A pivotal criterion for inclusion within Nano Letters is the convergence of at least two different areas or disciplines, ensuring a rich interdisciplinary scope. The journal is dedicated to fostering exploration in diverse areas, including: - Experimental and theoretical findings on physical, chemical, and biological phenomena at the nanoscale - Synthesis, characterization, and processing of organic, inorganic, polymer, and hybrid nanomaterials through physical, chemical, and biological methodologies - Modeling and simulation of synthetic, assembly, and interaction processes - Realization of integrated nanostructures and nano-engineered devices exhibiting advanced performance - Applications of nanoscale materials in living and environmental systems Nano Letters is committed to advancing and showcasing groundbreaking research that intersects various domains, fostering innovation and collaboration in the ever-evolving field of nanoscience and nanotechnology.