Quantum information transfer between topological and spin qubit systems

TL;DR

This paper introduces a method for coherently transferring quantum information between topological and spin qubits using gated control, enabling entanglement and long-distance quantum communication.

Contribution

It presents a novel approach to transfer and entangle topological and spin qubits via electron transfer and Majorana modes, enhancing quantum information processing capabilities.

Findings

Successful transfer of quantum states between spin and topological qubits.

Potential for long-distance quantum communication using topological superconductors.

Demonstration of entanglement creation between spatially separated qubits.

Abstract

We propose a method to coherently transfer quantum information, and to create entanglement, between topological qubits and conventional spin qubits. Our suggestion uses gated control to transfer an electron (spin qubit) between a quantum dot and edge Majorana modes in adjacent topological superconductors. Because of the spin polarization of the Majorana modes, the electron transfer translates spin superposition states into superposition states of the Majorana system, and vice versa. Furthermore, we show how a topological superconductor can be used to facilitate long-distance quantum information transfer and entanglement between spatially separated spin qubits.