Non-equilibrium quantum transport: quantum “heat engines” and full counting statistics.
by
Mihail Mintchev
→
Europe/Rome
281 (Physics Department, second floor)
281
Physics Department, second floor
Description
We investigate the particle and heat transport in a quantum junction with the geometry of star graph. The system is in a non-equilibrium steady state, characterised by the temperatures and chemical potentials of the heat reservoirs connected to the edges of the graph. The study of the non-equilibrium expectation values of the particle and heat currents reveals that the junction operates as energy converter, transmuting heat to chemical potential energy and vice versa. We show that the efficiency of this process behaves as that of a heat engine. In the second part of the seminar we describe the full counting statistics relative to the particle transport in the system and discuss the physical meaning of the underlying probability distribution.We discuss finally the impact of bound states in this context.
