Quantum nondemolition measurement of a single electron spin in a quantum dot

2003/01/15 by Mitsuro Sugita, Sugita, Mitsuro, Susumu Machida +4
Engineering · Physics and Astronomy · #FOS: Physical sciences #Molecular Junctions and Nanostructures #Quantum Physics (quant-ph) #Quantum and electron transport phenomena #Semiconductor Quantum Structures and Devices #quant-ph

paper · pdf · doi:10.48550/arxiv.quant-ph/0301064

6 pages, 6 figures

arxiv created 2003/01/15 · openalex publication_date 2003/01/15 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We propose a scheme for the quantum nondemolition (QND) measurement of a single electron spin in a single quantum dot (QD). Analytical expressions are obtained for the optical Faraday effect between a quantum dot exciton and microcavity field. The feasibility of the QND measurement of a single electron spin is discussed for a GaAs/AlAs microcavity with an InAs QD.

Related

• Single-shot read-out of an individual electron spin in a quantum dot
• Optical Detection of Single-Electron Spin Decoherence in a Quantum Dot
• Predicted Ultrafast Single Qubit Operations in Semiconductor Quantum Dots
• Optical investigations of quantum-dot spin dynamics
• Quantum information processing using quantum dot spins and cavity-QED