Overview of spin‐based quantum dot quantum computation

Here we give an overview of the research on spin‐based quantum dot quantum computation. In particular, we discuss the conditions for the Heisenberg exchange Hamiltonian to be a satisfactory description of two‐electron interaction in a GaAs double dot. We also discuss theoretical issues related to spin relaxation, spin encoding, and spin measurement. A brief account is also given to spin‐based quantum computation in SiGe quantum dots and donors in Si.