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TT: Fachverband Tiefe Temperaturen

TT 92: Quantum Dynamics, Decoherence and Quantum Information (joint session DY/TT)

TT 92.4: Vortrag

Freitag, 22. März 2024, 11:30–11:45, A 151

Generalisation of the Landauer-Buettiker theory onto the case of dissipative contacts — •Andrey Kolovsky — Krasnoyarsk, Russia

We revisit the problem of two-terminal transport of non-interacting Fermi particles in a mesoscopic device by employing the semi-microscopic model for the contacts, where we mimic the self-thermalisation property of the contacts by using the Lindblad relaxation operators. It is argued that the dissipative dynamics of the contacts causes partial decoherence of the quantum states of fermionic carriers in the device which, in its turn, can essentially modify the system conductance as compared to predictions of the standard Landauer-Buettiker theory.

Keywords: Quantum transport; Decoherence; Master equation; Non-equilibrium statistical mechanics