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Coherent excitation-energy transfer and quantum entanglement in a dimer
Liao, Jie-Qiao; Huang, Jin-Feng; Kuang, Le-Man; Sun, C. P.; Liao, JQ , Chinese Acad Sci, Inst Theoret Phys, Beijing 100190, Peoples R China
2010
发表期刊PHYSICAL REVIEW A
ISSN1050-2947
卷号82期号:5页码:-
摘要We study coherent energy transfer of a single excitation and quantum entanglement in a dimer, which consists of a donor and an acceptor modeled by two two-level systems. Between the donor and the acceptor, there exists a dipole-dipole interaction, which provides the physical mechanism for coherent energy transfer and entanglement generation. The donor and the acceptor couple to two independent heat baths with diagonal couplings that do not dissipate the energy of the noncoupling dimer. Special attention is paid to the effect on single-excitation energy transfer and entanglement generation of the energy detuning between the donor and the acceptor and the temperatures of the two heat baths. It is found that, the probability for single-excitation energy transfer largely depends on the energy detuning in the low temperature limit. Concretely, the positive and negative energy detunings can increase and decrease the probability at steady state, respectively. In the high temperature limit, however, the effect of the energy detuning on the probability is negligibly small. We also find that the probability is negligibly dependent on the bath temperature difference of the two heat baths. In addition, it is found that quantum entanglement can be generated in the process of coherent energy transfer. As the bath temperature increases, the generated steady-state entanglement decreases. For a given bath temperature, the steady-state entanglement decreases with the increase of the absolute value of the energy detuning.
部门归属[Liao, JQ; Huang, JF; Sun, CP] Chinese Acad Sci, Inst Theoret Phys, Beijing 100190, Peoples R China; [Huang, JF; Kuang, LM] Hunan Normal Univ, Key Lab Low Dimens Quantum Struct & Quantum Contr, Minist Educ, Changsha 410081, Hunan, Peoples R China; [Huang, JF; Kuang, LM] Hunan Normal Univ, Dept Phys, Changsha 410081, Hunan, Peoples R China
关键词Sudden-death Photosynthesis Environment State
学科领域Physics
资助者NSFC[10935010, 10775048]; NFRPC[2006CB921205, 2007CB925204] ; NSFC[10935010, 10775048]; NFRPC[2006CB921205, 2007CB925204] ; NSFC[10935010, 10775048]; NFRPC[2006CB921205, 2007CB925204] ; NSFC[10935010, 10775048]; NFRPC[2006CB921205, 2007CB925204] ; NSFC[10935010, 10775048]; NFRPC[2006CB921205, 2007CB925204] ; NSFC[10935010, 10775048]; NFRPC[2006CB921205, 2007CB925204] ; NSFC[10935010, 10775048]; NFRPC[2006CB921205, 2007CB925204] ; NSFC[10935010, 10775048]; NFRPC[2006CB921205, 2007CB925204]
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收录类别SCI
资助者NSFC[10935010, 10775048]; NFRPC[2006CB921205, 2007CB925204] ; NSFC[10935010, 10775048]; NFRPC[2006CB921205, 2007CB925204] ; NSFC[10935010, 10775048]; NFRPC[2006CB921205, 2007CB925204] ; NSFC[10935010, 10775048]; NFRPC[2006CB921205, 2007CB925204] ; NSFC[10935010, 10775048]; NFRPC[2006CB921205, 2007CB925204] ; NSFC[10935010, 10775048]; NFRPC[2006CB921205, 2007CB925204] ; NSFC[10935010, 10775048]; NFRPC[2006CB921205, 2007CB925204] ; NSFC[10935010, 10775048]; NFRPC[2006CB921205, 2007CB925204]
WOS记录号WOS:000284044500001
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被引频次:32[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/5011
专题理论物理所SCI论文
通讯作者Liao, JQ , Chinese Acad Sci, Inst Theoret Phys, Beijing 100190, Peoples R China
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GB/T 7714
Liao, Jie-Qiao,Huang, Jin-Feng,Kuang, Le-Man,et al. Coherent excitation-energy transfer and quantum entanglement in a dimer[J]. PHYSICAL REVIEW A,2010,82(5):-.
APA Liao, Jie-Qiao,Huang, Jin-Feng,Kuang, Le-Man,Sun, C. P.,&Liao, JQ , Chinese Acad Sci, Inst Theoret Phys, Beijing 100190, Peoples R China.(2010).Coherent excitation-energy transfer and quantum entanglement in a dimer.PHYSICAL REVIEW A,82(5),-.
MLA Liao, Jie-Qiao,et al."Coherent excitation-energy transfer and quantum entanglement in a dimer".PHYSICAL REVIEW A 82.5(2010):-.
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