Implementing Grover's Quantum Search on a Para-Hydrogen based Pure State   NMR Quantum Computer
  We demonstrate the implementation of Grover's quantum search algorithm on a liquid state nuclear magnetic resonance (NMR) quantum computer using essentially pure states. This was achieved using a two qubit device where the initial state is an essentially pure ($\epsilon=1.06\pm0.04$) singlet nuclear spin state of a pair of 1H nuclei arising from a chemical reaction involving para-hydrogen. We have implemented Grover's search to find one of four inputs which satisfies a function. 
M. S. Anwar, D. Blazina, H. Carteret, S. B. Duckett, J. A. Jones