Quantum Mechanics on the Hypercube
  We construct quantum evolution operators on the space of states, that is represented by the vertices of the n-dimensional unit hypercube. They realize the metaplectic representation of the modular group SL(2,Z(2^n)). By construction this representation acts in a natural way on the coordinates of the non-commutative 2-torus,T^2, and thus is relevant for noncommutative field theories as well as theories of quantum space-time. 
E. G. Floratos (NRCPS Demokritos) and S. Nicolis (CNRS-LMPT Tours)