Enhancing the absorption and energy transfer process via quantum entanglement

  • Xiao-Lan Zong
  • Wei Song
  • Jian Zhou
  • Ming Yang
  • Long-Bao Yu
  • Zhuo-Liang Cao


The quantum network model is widely used to describe the dynamics of excitation energy transfer in photosynthesis complexes. Different from the previous schemes, we explore a specific network model, which includes both light-harvesting and energy transfer process. Here, we define a rescaled measure to manifest the energy transfer efficiency from external driving to the sink, and the external driving fields are used to simulate the energy absorption process. To study the role of initial state in the light-harvesting and energy transfer process, we assume the initial state of the donors to be two-qubit and three-qubit entangled states, respectively. In the two-qubit initial state case, we find that the initial entanglement between the donors can help to improve the absorption and energy transfer process for both the near-resonant and large-detuning cases. For the case of three-qubit initial state, we can see that the transfer efficiency will reach a larger value faster in the tripartite entanglement case compared to the bipartite entanglement case.


Excitation energy transfer Quantum network model Quantum entanglement 



This work was supported by NSF-China under Grant No. 11374085, the Key Program of the Education Department of Anhui Province under Grant Nos. KJ2017A922, KJ2016A583, the Anhui Provincial Natural Science Foundation under Grant Nos.1708085MA12, 1708085MA10, the discipline top-notch talents Foundation of Anhui Provincial Universities under Grant Nos. gxbjZD2017024, gxbjZD2016078, the 136 Foundation of Hefei Normal University and the China Scholarships Council under Grant No. 201606500002.


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Authors and Affiliations

  1. 1.Institute for Quantum Control and Quantum Information, and School of Electronic and Information EngineeringHefei Normal UniversityHefeiChina
  2. 2.Department of Electronic Communication EngineeringAnhui Xinhua UniversityHefeiChina
  3. 3.School of Physics and Material ScienceAnhui UniversityHefeiChina
  4. 4.Department of PhysicsUniversity of MichiganAnn ArborUSA

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