Multi-particle interferometry in the time-energy domain with localized topological quasiparticles

Abstract

We propose multi-particle interference protocols in the time-energy domain that are able to probe topological quasiparticles. Using a set of quantum dots tunnel-coupled to a topologically nontrivial system, the time dependence of the dot level energies defines the interference protocol. We demonstrate that for a superconducting island harboring at least four Majorana bound states, the probability distribution of the final dot occupation numbers will exhibit a characteristic interferometric pattern which is qualitatively different in topologically trivial setups. arXiv:1909.00837v1 [cond-mat.mes-hall]

Quantum Control via Landau-Zener-Stückelberg-Majorana Transitions

“…The energy level structure is controlled by an external magnetic flux. Alternatively, a topological superconductor can be a weak link between quantum dots (Zazunov et al, 2020). Besides being fundamentally interesting, Majorana qubits provide the basis of topological quantum computation.…”