6533b858fe1ef96bd12b6370
RESEARCH PRODUCT
Perturbative many-body transfer
Tony J. G. ApollaroTony J. G. ApollaroSalvatore LorenzoSalvatore LorenzoClaudio SanavioWayne Jordan ChetcutiWayne Jordan Chetcutisubject
PhysicsQuantum physicsGeneral Physics and AstronomyQuantum computing01 natural sciencesMany bodyquantum many-body systems quantum excitation transfer quantum spin chain quadratic Hamiltonian010305 fluids & plasmasMany-body problemTheoretical physicsTransfer (group theory)Quantum systems0103 physical sciences010306 general physicsdescription
The transfer of excitations between different locations of a quantum many-body system is of primary importance in many research areas, from transport properties in spintronics and atomtronics to quantum state transfer in quantum information processing. We address the transfer of n > 1 bosonic and fermionic excitations between the edges of a one-dimensional chain modelled by a quadratic hopping Hamiltonian, where the block edges, embodying the sender and the receiver sites, are weakly coupled to the quantum wire. We find that perturbative high-quality transfer is attainable in the weak-coupling limit, for both bosons and fermions, only for certain modular arithmetic equivalence classes of the wire's length. Finally we apply our findings to the transport of spins and the charging of a many-body quantum battery.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2020-03-01 |