Processing Quantum Information in Hybrid Topological Qubit and Superconducting Flux Qubit System

Abstract

A composite system of Majorana-hosted semiconductor nanowire and superconducting flux qubit is inves- tigated. It is found that the coupling between these two subsystems can be controlled electrically, supplying a convenient method to implement π/8 phase gate of a Majorana-based topological qubit. We also present a scheme to transfer information from the flux qubit to the topological qubit using Landau-Zener transition. In addition, a structure named top-flux-flux is proposed to retrieve the information stored in the topological qubit. With the demonstration of the entanglement of two topological qubits, it is very promising to do quantum information process with this hybrid system.

5 pages, 4 figures

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Cited by in corpus (11)

• Nonadiabatic Landau-Zener-Stückelberg-Majorana transitions, dynamics, and interference
• Tunable interfaces for realizing universal quantum computation with topological qubits
• Robust interface between flying and topological qubits
• Suppression of the Landau-Zener transition probability by a weak classical noise
• Effects of decoherence on diabatic errors in Majorana braiding
• Noise threshold and resource cost of fault-tolerant quantum computing with Majorana fermions in hybrid systems
• Alternative fast quantum logic gates using nonadiabatic Landau-Zener-Stückelberg-Majorana transitions
• Minimal circuit for a flux-controlled Majorana qubit in a quantum spin-Hall insulator
• Readout of Majorana bound states via Landau-Zener transition
• Topological state transfers in cavity-magnon system
• Interfacing a topological qubit with a spin qubit in a hybrid quantum system