Quantum coherence and entanglement
Understanding the role of quantum coherence and entanglement in complex systems such as photosynthesis, the avian compass, solar cells, and chemical reactions. We also develop entanglement measures as alternatives to traditional electron correlation metrics in quantum chemistry.
For related publications, see the Publications page.
Related publications
- L Huang, S Kais, Y Chen, J Anderson, P Narang, D Mazziotti. “Quantum Computing Algorithms and Applications for Coherent and Strongly Correlated Chemical Systems.” Purdue University. 2026.
- E Dickey, S Kais. “Universal Complex Quantum-Like Bits from Hermitian Weighted Graphs.” arXiv preprint arXiv:2604.23991. 2026.
- VS Makhija, R Gupta, S Kais. “Entanglement entropy as a potential measure for non-adiabatic coupling.” 56th Annual Meeting of the APS Division of Atomic, Molecular and Optical Physics. 2025.
- Z Hu, S Kais. “The Qubit Information Logic Theory for Understanding Multi‐Qubit Entanglement and Designing Exotic Entangled States.” Annalen der Physik 537 (7), 2500176. 2025. Cited by 1
- B Khalid, S Kais. “Classical analog of entanglement for a kicked top.” Physical Review A 112 (1), 012201. 2025. Cited by 3
- E Dickey, A Vyas, S Kais. “Construction and Rigorous Analysis of Quantum-Like States.” arXiv preprint arXiv:2507.21289. 2025. Cited by 1
- ZA Wang, BF Xie, F Ming, YT Wang, D Wang, Y Meng, ZH Liu, K Xu, .... “Experimental test of generalized multipartite entropic uncertainty relations.” Physical Review A 110 (6), 062220. 2024. Cited by 19
- Z Hu, S Kais. “Dormant entanglement that can be activated or destroyed by the basis choice of measurements on an external system.” arXiv preprint arXiv:2306.05517. 2023. Cited by 2
- KJB Ghosh, S Kais, DR Herschbach. “Geometrical picture of the electron–electron correlation at the large-D limit.” Physical Chemistry Chemical Physics 24 (16), 9298-9307. 2022. Cited by 2
- Z Hu, K Head-Marsden, DA Mazziotti, P Narang, S Kais. “A general quantum algorithm for open quantum dynamics demonstrated with the Fenna-Matthews-Olson complex.” Quantum 6, 726. 2022. Cited by 100
- ZA Wang, BF Xie, F Ming, YT Wang, D Wang, Y Meng, ZH Liu, JS Tang, .... “Generalized multipartite entropic uncertainty relations: theory and experiment.” arXiv preprint arXiv:2207.12693. 2022. Cited by 2
- BS Rolczynski, SH Yeh, P Navotnaya, LT Lloyd, AR Ginzburg, H Zheng, .... “Time-domain line-shape analysis from 2d spectroscopy to precisely determine Hamiltonian parameters for a photosynthetic complex.” The Journal of Physical Chemistry B 125 (11), 2812-2820. 2021. Cited by 7
- S Roy, Z Hu, S Kais, P Bermel. “Enhancement of Photovoltaic Current through Dark States in Donor‐Acceptor Pairs of Tungsten‐Based Transition Metal Di‐Chalcogenides.” Advanced Functional Materials 31 (23), 2100387. 2021. Cited by 30
- J Li, M Sajjan, SS Kale, S Kais. “Statistical correlation between quantum entanglement and spin–orbit coupling in crossed beam molecular dynamics.” Advanced Quantum Technologies 4 (12), 2100098. 2021. Cited by 6
- SS Kale, Y Ding, YP Chen, B Friedrich, S Kais. “Spin-momentum entanglement in a Bose–Einstein condensate.” Physical Chemistry Chemical Physics 22 (44), 25669-25674. 2020. Cited by 9
- SC Massey, PC Ting, SH Yeh, PD Dahlberg, SH Sohail, MA Allodi, .... “Orientational dynamics of transition dipoles and exciton relaxation in LH2 from ultrafast two-dimensional anisotropy.” The journal of physical chemistry letters 10 (2), 270-277. 2019. Cited by 27
- S Roy, Z Hu, S Kais, P Bermel. “Tailoring Donor-Acceptor Pairs of Tungsten-based Transition Metal Di-Chalcogenides (TMDCs) for Improved Photovoltaic Current Generation.” 2019 IEEE 46th Photovoltaic Specialists Conference (PVSC), 0772-0776. 2019. Cited by 1
- J Li, S Kais. “Entanglement classifier in chemical reactions.” Science advances 5 (8), eaax5283. 2019. Cited by 33
- SH Yeh, RD Hoehn, MA Allodi, GS Engel, S Kais. “Elucidation of near-resonance vibronic coherence lifetimes by nonadiabatic electronic-vibrational state character mixing.” Proceedings of the National Academy of Sciences 116 (37), 18263-18268. 2019. Cited by 52
- BS Rolczynski, H Zheng, VP Singh, P Navotnaya, AR Ginzburg, .... “Correlated protein environments drive quantum coherence lifetimes in photosynthetic pigment-protein complexes.” Chem 4 (1), 138-149. 2018. Cited by 65
- Z Hu, GS Engel, FH Alharbi, S Kais. “Dark states and delocalization: Competing effects of quantum coherence on the efficiency of light harvesting systems.” The Journal of chemical physics 148 (6). 2018. Cited by 31
- S Kais, Z Hu, GS Engel. “Accessing dark states optically through excitationferrying states.” Qatar Foundation Annual Research Conference Proceedings 2018 (1). 2018.
- Z Hu, GS Engel, S Kais. “Connecting bright and dark states through accidental degeneracy caused by lack of symmetry.” The Journal of Chemical Physics 148 (20). 2018. Cited by 7
- B Rolczynski, S Yeh, P Navotnaya, L Lloyd, A Ginzburg, H Zheng, .... “Novel spectroscopic probes of excitionic structure and dynamics in photosynthetic systems.” ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY 256. 2018.
- B Rolczynski, H Zheng, V Singh, P Navotnaya, A Ginzburg, J Caram, .... “Ultrafast spectroscopy of synchronized and correlated excited state motions in the presence of spectral diffusion.” ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY 256. 2018.
- D Wang, WN Shi, RD Hoehn, F Ming, WY Sun, L Ye, S Kais. “Probing entropic uncertainty relations under a two-atom system coupled with structured bosonic reservoirs: D. Wang et al..” Quantum Information Processing 17 (12), 335. 2018. Cited by 40
- Z Hu, GS Engel, S Kais. “Double-excitation manifold's effect on exciton transfer dynamics and the efficiency of coherent light harvesting.” Physical Chemistry Chemical Physics 20 (47), 30032-30040. 2018. Cited by 26
- SH Yeh, GS Engel, S Kais. “The coherence lifetime-borrowing effect in vibronically coupled molecular aggregates under non-perturbative system-environment interactions..” APS March Meeting Abstracts 2017, F25. 005. 2017.
- D Wang, AJ Huang, RD Hoehn, F Ming, WY Sun, JD Shi, L Ye, S Kais. “Entropic uncertainty relations for Markovian and non-Markovian processes under a structured bosonic reservoir.” Scientific reports 7 (1), 1066. 2017. Cited by 86
