Realistic Quantum Control of Energy Transfer in Photosynthetic Processes

Reda M. El-Shishtawy, Robert Haddon, Saleh Al-Heniti, Bahaaudin Raffah, Sayed Abdel-Khalek, Kamal Berrada and Yas Al-Hadeethi
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Reda M. El-Shishtawy: Department of Chemistry, Faculty of Sciences, King Abdulaziz University, Jeddah 21589, Saudi Arabia
Robert Haddon: Center for Nanoscale Science and Engineering, Departments of Chemistry and Chemical and Environmental Engineering, University of California, Riverside, CA 92521-0403, USA
Saleh Al-Heniti: Physics Department, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia
Bahaaudin Raffah: Physics Department, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia
Sayed Abdel-Khalek: Mathematics Department, Faculty of Science, Taif University, Taif 009662, Saudi Arabia
Kamal Berrada: Department of Physics, College of Science, Al Imam Mohammad Ibn Saud Islamic University (IMSIU), Riyadh 009661, Saudi Arabia
Yas Al-Hadeethi: Physics Department, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia

Energies, 2016, vol. 9, issue 12, 1-11

Abstract: The occurrence of coherence phenomenon as a result of the interference of the probability amplitude terms is among the principle features of quantum mechanics concepts. Current experiments display the presence of quantum techniques whose coherence is supplied over large interval times. Specifically, photosynthetic mechanisms in light-harvesting complexes furnish oscillatory behaviors owing to quantum coherence. In this manuscript, we study the coherent quantum energy transfer for a single-excitation and nonlocal correlation in a dimer system (donor+acceptor) displayed by two-level systems (TLSs), interacting with a cavity field with a time-dependent coupling effect considering the realistic situation of coupling between each TLS and the cavity field. We analyze and explore the specific conditions which are viable with real experimental realization for the ultimate transfer of quantum energy and nonlocal quantum correlation. We show that the enhancement of the probability for a single-excitation energy transfer greatly benefits from the energy detuning, photon-number transition, classicality of the field, and the time-dependent coupling effect. We also find that the entanglement between the donor and acceptor is very sensitive to the physical parameters and it can be generated during the coherent energy transfer.

Keywords: quantum effects in biology; energy transfer; dipole-dipole interaction; time-dependent coupling effect; quantum correlations (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2016
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