TY  - JOUR
VL  - 14
JF  - NPG Asia Materials
PB  - Springer Science and Business Media LLC
UR  - https://doi.org/10.1038/s41427-022-00392-6
Y1  - 2022/05/20/
ID  - discovery10149351
N1  - This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article?s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article?s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
TI  - Triplet-radical spin entanglement: potential of molecular materials for high-temperature quantum information processing
AV  - public
KW  - Magnetic properties and materials
KW  -  Organic chemistry
KW  -  Quantum optics
KW  -  Theory and computation
KW  -  Ultrafast photonics
N2  - Recently, spin-bearing molecules have been experimentally demonstrated to have great potential as building blocks for quantum information processing due to their substantial advantages including tunability, portability, and scalability. Here, we propose a theoretical model based on the theory of open quantum systems for spin dynamics in a molecule containing one radical, which can interact with the triplet state arising from another part of the molecule owing to optical excitation and intersystem crossing. With the initial state being a classical mixture of a radical 1/2-spin, the exchange interaction between the radical and the triplet produces a spin coherent state, which could potentially be used for a qubit-qutrit quantum entangling gate. Our calculations for the time-resolved electron paramagnetic resonance spectra showed good qualitative agreement with the related experimental results for radical-bearing molecules at high temperature (~77?K, the boiling point of liquid nitrogen). This work therefore lays a solid theoretical cornerstone for optically driven quantum gate operations in radical-bearing molecular materials, aiming toward high-temperature quantum information processing.
SN  - 1884-4049
A1  - Ma, Lin
A1  - Chang, Jiawei
A1  - Chen, Qiuyuan
A1  - Zou, Taoyu
A1  - Wu, Wei
A1  - Wang, Hai
ER  -