Photogenerated Multi-Spin Systems as Qubits for Quantum Information Science

光生多自旋系统作为量子信息科学的量子位

• 批准号: 2154627
• 负责人: Michael Wasielewski
• 金额: $ 60.37万
• 依托单位: Northwestern University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2022
• 资助国家: 美国
• 起止时间: 2022-07-01 至 2025-06-30
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2154627&HistoricalAwards=false
• 关键词: Photogenerated; Multi; Spin; Systems; Qubits

In this project, funded by the Chemical Structure, Dynamics & Mechanisms B Program of the Chemistry Division, Professor Michael Wasielewski of the Department of Chemistry at Northwestern University is developing a fundamental understanding of how to control charge and spin transport through organic molecules that is critical to the future of quantum information science applications for computation, sensing, and communications. The degree of control over molecular structure and properties afforded by chemistry makes it possible to develop molecules and materials that take advantage of electron spin dynamics to implement new strategies for quantum information science. Molecular architectures provide unmatched flexibility for tailoring quantum properties using bottom-up synthetic strategies. The project lies at the interface of organic, physical, and materials chemistry, and is therefore well suited to the education of scientists at all levels. This group is also well-positioned to provide the highest level of education and training for students underrepresented in science. Outreach activities involving K-12 students will also be part of the funded project.This project will address several goals essential for exploiting spin-correlated radical pairs (SCRPs) as spin qubit pairs (SQPs) that target quantum information science applications. Professor Michael Wasielewski’s group will 1) photogenerate SCRPs to produce well-defined initial SQP quantum states that can be addressed and manipulated to serve as targets for two-qubit quantum gates; 2) entangle the electron spins of SQPs with one or two nuclear spins to extend spin coherence lifetimes; 3) move (teleport) spin coherences between two sites, focusing on how SQP coherence lifetimes and increasing the teleportation distance affect teleportation fidelity; and 4) explore how chirality-induced spin selectivity influences SQP coherence and polarization using chiral electron donor-acceptor molecules. In topics 1, 3, and 4, they will extend the molecular architectures to include DNA hairpins, which will provide a scalable platform for the rapid synthesis of a wide variety of molecular quantum information science systems. The spin dynamics of these systems will be probed using time-resolved electron paramagnetic resonance experiments, which will be performed using a short laser pulse to generate the SCRP following by probing the spins using constant or pulsed microwaves.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

在该项目中，由化学结构，动力学和机制B计划资助，化学部门B计划，西北大学化学系的Michael Wasielewski教授正在对如何控制如何通过有机分子进行电荷和旋转运输的基本了解，这对计算，传感和通信的量子信息科学应用程序的未来至关重要。化学对分子结构和特性的控制程度使得可以开发利用电子自旋动力学的分子和材料来实施量子信息科学的新策略。分子体系结构为使用自下而上的合成策略提供了无与伦比的灵活性。该项目在于有机，物理和材料化学的界面，因此非常适合各级科学家的教育。小组也有充分的位置，为在科学领域缺乏的学生提供最高水平的教育和培训。涉及K-12学生的外展活动也将是资助项目的一部分。该项目将解决针对量子信息科学应用程序的自旋量子量子对（SQP），将与自旋相关的激进对（SCRP）（SCRP）（SCRP）（SCRP）所必需。 Michael Waseelewski教授的组将1）光生SCRP，以产生定义明确的初始SQP量子状态，可以解决并操纵以充当两量量子门的靶标； 2）将SQP的电子旋转与一个或两个核自旋纠缠以延长自旋相干寿命； 3）在两个位点之间移动（传送）自旋相干，重点是SQP相干寿命和增加传送距离会影响传送保真度； 4）探索手性诱导的自旋选择性如何使用手性电子供体 - 受体分子影响SQP相干性和极化。在主题1、3和4中，它们将扩展分子体系结构以包括DNA发夹，这将为快速合成各种分子量子信息科学系统提供可扩展的平台。这些系统的旋转动力学将使用时间分辨的电子顺磁共振实验进行探测，该实验将使用短激光脉冲通过使用恒定或脉冲微波的旋转来探测旋转，以生成SCRP。该奖项反映了NSF的法定任务，并通过评估了CRCRITAIL IFFICTIAL IFFICTIAL IFFICTIAL MERIARIAL的支持。

项目成果

Quantum Gate Operations on a Spectrally Addressable Photogenerated Molecular Electron Spin-Qubit Pair

• DOI: 10.1021/jacs.3c01243
• 发表时间: 2023-03-13
• 期刊: JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
• 影响因子: 15
• 作者: Mao, Haochuan;Pazera, Gediminas J.;Wasielewski, Michael R.
• 通讯作者: Wasielewski, Michael R.

Chirality-Induced Spin Selectivity: An Enabling Technology for Quantum Applications

• DOI: 10.1002/adma.202300472
• 发表时间: 2023-05-12
• 期刊: ADVANCED MATERIALS
• 影响因子: 29.4
• 作者: Chiesa, Alessandro;Privitera, Alberto;Carretta, Stefano
• 通讯作者: Carretta, Stefano

A spin-frustrated trisradical trication of prismcage

棱镜笼的自旋受阻三元三重化

• 发表时间: 2023
• 期刊: Journal of the American Chemical Society
• 影响因子: 15
• 作者: Han, H.;Huang, Y.;Tang, C.;Liu, Y.;Krzyaniak, M. D.;Song, B.;Li, X.;Wu, G.;Wu, Y.;Zhang, R.
• 通讯作者: Zhang, R.

Pulse sequences for manipulating spin states of molecular radical-pair-based electron spin qubit systems for quantum information applications.

用于操纵基于分子自由基对的电子自旋量子位系统的自旋态的脉冲序列，用于量子信息应用。

• 发表时间: 2023
• 期刊: Journal of chemical physics
• 影响因子: 4.4
• 作者: Pazera, G.;Kryzaniak, m.D and
• 通讯作者: Kryzaniak, m.D and