Fast qubits of optical frequencies on the rare-earth ions in fluoride crystals and color centers in diamond

Vladimir Hizhnyakov, Vadim Boltrushko, Aleksander Shelkan +1

Fluoride crystals doped with rare-earth ions (REI) and pair centers in diamond for fast ($10^{-9}\mathrm{s}$) quantum computers (FQC) are proposed. As specific systems for REI doping,…