Probing Majorana edge states with a flux qubit

Abstract

A pair of counter-propagating Majorana edge modes appears in chiral p-wave superconductors and in other superconducting systems belonging to the same universality class. These modes can be described by an Ising conformal field theory. We show how a superconducting flux qubit attached to such a system couples to the two chiral edge modes via the disorder field of the Ising model. Due to this coupling, measuring the back-action of the edge states on the qubit allows to probe the properties of Majorana edge modes.

18 pages,3 figures

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Cited by in corpus (11)

• Search for non-Abelian Majorana braiding statistics in superconductors
• Deterministic creation and braiding of chiral edge vortices
• Interferometric and noise signatures of Majorana fermion edge states in transport experiments
• Disorder-assisted error correction in Majorana chains
• Tunable interfaces for realizing universal quantum computation with topological qubits
• Electrical detection of the Majorana fusion rule for chiral edge vortices in a topological superconductor
• Robust interface between flying and topological qubits
• Extracting entangled qubits from Majorana fermions in quantum dot chains through the measurement of parity
• Anomalous periodicity and parafermion hybridization in superconducting qubits
• Non-Abelian anyon statistics through AC conductance of a Majorana interferometer
• SWAP gate between a Majorana qubit and a parity-protected superconducting qubit