Interferometric single-shot parity measurement in InAs-Al hybrid devices.

ABSTRACT: The fusion of non-Abelian anyons is a fundamental operation in measurement-only topological quantum computation¹. In one-dimensional topological superconductors (1DTSs)^2-4, fusion amounts to a determination of the shared fermion parity of Majorana zero modes (MZMs). Here we introduce a device architecture⁵ that is compatible with future tests of fusion rules. We implement a single-shot interferometric measurement of fermion parity^6-11 in indium arsenide-aluminium heterostructures with a gate-defined superconducting nanowire^12-14. The interferometer is formed by tunnel-coupling the proximitized nanowire to quantum dots. The nanowire causes a state-dependent shift of the quantum capacitance of these quantum dots of up to 1 fF. Our quantu

SUBMITTER: Microsoft Azure Quantum 

PROVIDER: S-EPMC11839464 | biostudies-literature | 2025 Feb

REPOSITORIES: biostudies-literature