Radical Electron-spin-light Interface Dynamics

自由基电子自旋光界面动力学

• 批准号: EP/W018519/1
• 负责人: Emrys Evans
• 金额: $ 34.86万
• 依托单位: Swansea University
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2022
• 资助国家: 英国
• 起止时间: 2022 至 无数据
• 项目状态: 未结题
• 来源: https://gtr.ukri.org/projects?ref=EP%2FW018519%2F1
• 关键词: Radical; Electron; spin; light; Interface

REID will design and test molecular systems with unpaired electrons that interface light and quantum-mechanical spin states.The electron spin-up and down states in molecules have spin properties that are attractive for quantum bits (qubits) in quantum information science (QIS). Step-change advancements from exploiting molecular spins are anticipated in: memory (higher density), computing (higher speed), communication (higher security) and sensing (higher sensitivity). For molecules to be used here, the light interface with molecular spins must be established for initialisation, manipulation and probing of spin states. Nitrogen-vacancy diamond defects have led the way for quantum technologies which use an optical-spin interface from ground state and excited-state energy levels. However higher tunability and more controllable qubit locations is achievable by chemistry and molecular qubits.The starting point for REID is my previous work where I demonstrated that luminescent pi-radicals with unpaired electrons are usable as doublet-spin manifolds for more efficient optoelectronics. There is now an opportunity to create altogether new technology platforms in QIS from the optical, spin and magnetic properties of unpaired electrons with a molecular optical-spin interface.Novel spin and energy manifolds will be designed in REID from precise control over positioning of unpaired electrons in molecular structures. The optical-spin systems will be studied by magneto-optical spectroscopy to give unique insights into new photo- and spin physics, with focus from the spin sub-levels to molecular energy levels.REID will test the molecular-spin systems as quantum sensors with exceptional sensitivity of weak magnetic fields, even from individual nuclei in solution and solid-state environments.

REID将设计和测试具有未成对电子的分子系统，这些未成对电子将光和量子力学自旋态连接在一起。分子中的电子自旋向上和向下状态具有对量子信息科学（QIS）中的量子比特（qubit）有吸引力的自旋特性。预计利用分子自旋将在以下领域取得阶跃式进步：存储器（更高密度）、计算（更高速度）、通信（更高安全性）和传感（更高灵敏度）。对于这里使用的分子，必须建立具有分子自旋的光界面，用于初始化、操纵和探测自旋状态。氮空位金刚石缺陷为量子技术开辟了道路，该技术使用基态和激发态能级的光学自旋界面。然而，更高的可调谐性和更可控的量子位位置是通过化学和分子量子位实现的。REID的起点是我以前的工作，我证明了具有未成对电子的发光π自由基可用作更有效的光电子学的双重自旋流形。现在有机会在QIS中创建全新的技术平台，利用分子光学-自旋界面的未成对电子的光学，自旋和磁性。通过精确控制未成对电子在分子结构中的位置，REID将设计新的自旋和能量流形。光自旋系统将通过磁光光谱学进行研究，为新的光和自旋物理学提供独特的见解，重点是从自旋子能级到分子能级。REID将测试分子自旋系统作为量子传感器对弱磁场的特殊灵敏度，甚至来自溶液和固态环境中的单个核。

项目成果

Reversible spin-optical interface in luminescent organic radicals.

• DOI: 10.1038/s41586-023-06222-1
• 发表时间: 2023-08
• 期刊: NATURE
• 影响因子: 64.8
• 作者: Gorgon, Sebastian;Lv, Kuo;Grune, Jeannine;Drummond, Bluebell H.;Myers, William K.;Londi, Giacomo;Ricci, Gaetano;Valverde, Danillo;Tonnele, Claire;Murto, Petri;Romanov, Alexander S.;Casanova, David;Dyakonov, Vladimir;Sperlich, Andreas;Beljonne, David;Olivier, Yoann;Li, Feng;Friend, Richard H.;Evans, Emrys W.
• 通讯作者: Evans, Emrys W.