Login / Signup

Electrical Read-Out of a Single Spin Using an Exchange-Coupled Quantum Dot.

Clément GodfrinStefan ThieleAbdelkarim FerhatSvetlana KlyatskayaManfred M KappesWolfgang WernsdorferFranck Balestro
Published in: ACS nano (2017)
We present an original way of continuously reading-out the state of a single electronic spin. Our detection scheme is based on an exchange interaction between the electronic spin and a nearby read-out quantum dot. The coupling between the two systems results in a spin-dependent conductance through the read-out dot and establishes an all electrical and nondestructive single spin detection. With conductance variations up to 4% and read-out fidelities greater than 99.5%, this method represents an alternative to systems for which spin-to-charge conversion cannot be implemented. Using a semiclassical approach, we present an asymmetric exchange coupling model in good agreement with our experimental results.
Keyphrases
  • single molecule
  • room temperature
  • density functional theory
  • transition metal
  • ionic liquid
  • molecular dynamics
  • loop mediated isothermal amplification
  • working memory
  • sensitive detection
  • visible light