Physical representation of universal quantum gates for a trapped ion
G. Drobný, Pavol Gustafik · Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE · 2001
We discuss possibilities of quantum manipulations of trapped ions from the perspective of quantum information processing. We show how from a restricted set of feasible microscopic interactions a physical implementation of an arbitrary unitary operator can be realized. An example is given for the discrete Fourier transform. The synthesis of operators enables to realize universal quantum gates to process unknown input qubits which can be encoded into vibrational levels of trapped ions. We discuss also problem of an arbitrary measurement which can be performed using quantum gates.