Fast Quantum Maps
  We develop number theoretic tools that allow to perform computations relevant for the quantum mechanics over finite fields of arbitrary, odd size, with the same speedup that is enjoyed by the Fast Fourier Transform. 
G. G. Athanasiu (U. Crete), E. G. Floratos (NRCPS Demokritos) and S.   Nicolis (CNRS-LMPT Tours)