Optimal initialization of a quantum system for an efficient coherent energy transfer
Name
Cao_Optimal initialization of a quantum system for an efficient coherent energy transfer.pdf
Description
Published version
Size
2.78 MB
Format
Adobe PDF
Checksum (MD5)
a897258341ef4d8c115fabc8b5d1e982
Author(s)
Cao, Jianshu
Date Issued
2018
Journal
Chinese journal of chemical physics
Publisher
AIP Publishing
Citation
Gong,Zhi-hao, Zhou-fei Tang, Jian-shu Cao, and Jianlan Wu, "Optimal initialization of a quantum system for an efficient coherent energy transfer." Chinese journal of chemical physics 31, 31 (2018): no. 421 doi 10.1063/1674-0068/31/CJCP1804068 ©2018 Author(s)
Version
Final published version
Abstract
For an energy transfer network, the irreversible depletion of excited electron energy occurs through either an efficient flow into an outer energy sink or an inefficient decay. With a small decay rate, the energy transfer efficiency is quantitatively reflected by the average life time of excitation energy before being trapped in the sink where the decay process is omitted. In the weak dissipation regime, the trapping time is analyzed within the exciton population subspace based on the secular Redfield equation. The requirement of the noise-enhanced energy transfer is obtained, where the trapping time follows an exact or approximate 1/Γ-scaling of the dissipation strength Γ. On the opposite side, optimal initial system states are conceptually constructed to suppress the 1/Γ-scaling of the trapping time and maximize the coherent transfer efficiency. Our theory is numerically testified in four models, including a biased two-site system, a symmetric three-site branching system, a homogeneous one-dimensional chain, and an 8-chromophore FMO protein complex. ©2018
MIT Department
Massachusetts Institute of Technology. Department of Chemistry
Terms of Use
Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1063/1674-0068/31/CJCP1804068
