Development of Single Cocrystal of Stable Radical and Chromophore for Molecular Electron Spin Qudits
Abstract
The objective of this proposal is to develop cocrystals comprising stable organic radicals doped into organic chromophores that upon photoexcitation will generate spin-polarized quartet states that can serve as qudits for Quantum Information Science and Engineering (QISE) applications. The technical approach will match the triplet energy levels of the chromophores with the doublet energy levels of the radicals to resonantly enhance quartet spin state formation. In addition, we will exploit the recent development of luminescent stable radicals to provide optical readout of the spin states. We will use time-resolved optical spectroscopy to characterize the electronic transitions in these cocrystals and time-resolved, pulse Electron Paramagnetic Resonance (pulse- EPR) and optically detected magnetic resonance (ODMR) spectroscopies to determine the spin dynamics of these systems and to manipulate the qudits to execute quantum gates for QISE applications. By systematically varying polycyclic aromatic hydrocarbon chromophores and leveraging the modular nature of cocrystals, we aim to control the photophysical and magnetic properties of multi-spin states to enhance functionality. The collaboration between Lee, focusing on cocrystal growth and characterization, and Wasielewski, with expertise in investigating electronic and spin states in organic cocrystals, will facilitate the realization of the proposed objectives and the broader impact of this research in developing new quantum materials for QISE applications.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Feb 05, 2025
- Source ID
- FA23862414066
Entities
People
- Michael R. Wasielewski
Organizations
- Air Force Office of Scientific Research
- Northwestern University
- United States Air Force