引用本文:
【打印本页】   【HTML】   【下载PDF全文】   View/Add Comment  【EndNote】   【RefMan】   【BibTex】
过刊浏览    高级检索
本文已被:浏览 31次   下载 3  
分享到: 微信 更多
Optimal initialization of a quantum system for an efficient coherent energy transfer
Jianlan Wu
Author NameAffiliationE-mail
Jianlan Wu Physics Department, Zhejiang University, 38 ZheDa Road, Hangzhou, Zhejiang, 310027, China jianlanwu@zju.edu.cn 
Abstract:
The efficiency of an energy transfer network is explored through the average time of the excitation energy being trapped by a sink for an efficient work. 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 constructed to suppress the 1/Γ-scaling of the trapping time and maximize the coherent transfer efficiency. Our theory is confirmed in the four models, including a biased two-site system, a symmetric three-site branching system, a homogeneous one-dimensional chain, and a 8-chromophore FMO protein complex.
Key words:  noise-enhanced energy transfer, trapping-free subspace, optimal initialization, quantum dissipation
FundProject:
Optimal initialization of a quantum system for an efficient coherent energy transfer
JLWU
摘要:
The efficiency of an energy transfer network is explored through the average time of the excitation energy being trapped by a sink for an efficient work. 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 constructed to suppress the 1/Γ-scaling of the trapping time and maximize the coherent transfer efficiency. Our theory is confirmed in the four models, including a biased two-site system, a symmetric three-site branching system, a homogeneous one-dimensional chain, and a 8-chromophore FMO protein complex.
关键词:  noise-enhanced energy transfer, trapping-free subspace, optimal initialization, quantum dissipation
DOI:
分类号: