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Dephasing-assisted selective incoherent quantum transport.
Naghi Behzadi1, Bahram Ahansaz1, Hadi Kasani1
1Research Institute for Fundamental Sciences, University of Tabriz, Tabriz 51666-16471, Iran.
Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics
|November 14, 2015
Summary
Researchers developed a method for directed energy transport in quantum networks using dephasing noise. This technique allows excitations to reach specific reaction centers, crucial for photosystems and quantum technologies.
Area of Science:
- Quantum physics
- Photosynthesis research
- Quantum information science
Background:
- Energy transport in quantum networks is vital for natural processes like photosynthesis and technological applications.
- Controlling energy flow to specific sites within a network is a key challenge.
Purpose of the Study:
- To propose and demonstrate a method for selective energy transport in quantum networks.
- To control the destination of excitation energy within a network connected to multiple reaction centers.
Main Methods:
- Utilizing independent sources of dephasing noise to guide energy transport.
- Analyzing the system's coherent and incoherent evolution dynamics.
- Demonstrating excitation transfer to a desired reaction center.
Main Results:
- Coherent evolution alone does not facilitate energy transport in the network.
- Application of dephasing noise along a selected path enables directed energy transfer.
- Complete excitation transfer to a specific reaction center is achieved.
Conclusions:
- Dephasing noise can be strategically employed to control energy transport pathways in quantum networks.
- This method offers a novel approach for manipulating energy flow in systems relevant to artificial photosynthesis and quantum computing.
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