Teleportation of electronic many-qubit states via single photons

TL;DR

This paper introduces a novel quantum teleportation method for many-qubit states in quantum dots using single-photon measurements and Faraday rotation, enabling communication between spintronic and photonic quantum devices.

Contribution

It presents a new teleportation scheme relying solely on single-photon measurements and Faraday rotation for entangled electron spins in quantum dots.

Findings

Establishes GHZ entanglement via photon-electron interaction

Enables teleportation with single-qubit measurements and classical communication

Links spintronic and photonic quantum information systems

Abstract

We propose a teleportation scheme that relies only on single-photon measurements and Faraday rotation, for teleportation of many-qubit entangled states stored in the electron spins of a quantum dot system. The interaction between a photon and the two electron spins, via Faraday rotation in microcavities, establishes Greenberger-Horne-Zeilinger entanglement in the spin-photon-spin system. The appropriate single-qubit measurements, and the communication of two classical bits, produce teleportation. This scheme provides the essential link between spintronic and photonic quantum information devices by permitting quantum information to be exchanged between them.