Photon-spin qubit-conversion based on Overhauser shift of Zeeman energies in quantum dots

TL;DR

This paper proposes a novel method for converting photon qubits to spin qubits in quantum dots using the Overhauser field, with preliminary experimental insights and considerations of exciton effects.

Contribution

It introduces a new conversion technique leveraging nuclear polarization-induced magnetic fields in quantum dots, advancing quantum information processing methods.

Findings

Preliminary experiment on InAlAs/AlGaAs quantum dots demonstrates feasibility.

Analysis of exciton effects shows potential challenges in conversion stability.

The method offers a pathway for efficient quantum state transfer in solid-state systems.

Abstract

We propose a new method to realize a conversion of photon qubit and spin qubit using the effective magnetic field created by the nuclear polarization known as Overhauser field. We discuss its preliminary experiment on InAlAs/AlGaAs self-assembled quantum dot and also discuss effects of excitons which could destroy the conversion.