The transfer of excitations between different locations of a quantum many-body system is of primaryimportance in many research areas, from transport properties in spintronics and atomtronics toquantum state transfer in quantum information processing. We address the transfer of n > 1 bosonicand fermionic excitations between the edges of a one-dimensional chain modelled by a quadratichopping Hamiltonian, where the block edges, embodying the sender and the receiver sites, are weaklycoupled to the quantum wire. We find that perturbative high-quality transfer is attainable in the weakcoupling limit, for both bosons and fermions, only for certain modular arithmetic equivalence classesof the wire’s length. Finally we apply our findings to the transport of spins and the charging of a manybody quantum battery.
|Numero di pagine||16|
|Rivista||New Journal of Physics|
|Stato di pubblicazione||Published - 2020|
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