Photon-spin qubit-conversion based on Overhauser shift of Zeeman   energies in quantum dots
  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. 
S. Muto, S. Adachi, T. Yokoi, H. Sasakura, I. Suemune