Experimental Quantum Error Correction
  Quantum error correction is required to compensate for the fragility of the state of a quantum computer. We report the first experimental implementations of quantum error correction and confirm the expected state stabilization. In NMR computing, however, a net improvement in the signal-to-noise would require very high polarization. The experiment implemented the 3-bit code for phase errors in liquid state state NMR. 
D. G. Cory, W. Mass, M. Price, E. Knill, R. Laflamme, W. H. Zurek, T.   F. Havel, S. S. Somaroo