Interference effects in nonequilibrium quantum transport with long-range interactions

We investigate how long-range power-law hopping interaction, ∼ 1/ r a , affects the characteristics of dissipative quantum transport in a nonequilibrium setting. The model under consideration is a noninteracting bosonic chain subject to thermal baths of differing temperature at its boundaries and de...

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Bibliographic Details
Published in:Journal of physics. Conference series 2024-10, Vol.2866 (1), p.12088
Main Authors: Ulfa, Marisa, Dwiputra, Donny
Format: Article
Language:English
Subjects:
Quantum transport
Steady state models
Thermal baths
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Summary:We investigate how long-range power-law hopping interaction, ∼ 1/ r a , affects the characteristics of dissipative quantum transport in a nonequilibrium setting. The model under consideration is a noninteracting bosonic chain subject to thermal baths of differing temperature at its boundaries and dephasing noise which is applied uniformly to all the sites. It is shown that the steady-state current may vary nonmonotonically and has a peak for a finite a depending on the position of the cold bath. This site-specific behaviour stems back to the interference effect caused by the parity of the total sites N and the baths positions. The fractional nature of the system, along with the interplay between coherent and incoherent transport, will affect the steady state current that characterizes the transport.
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/2866/1/012088