Comment on: Preserving Coherence in Quantum Computation by Pairing Quantum Bits
P. Zanardi, M. Rasetti
Abstract
We argue that several claims of paper Phys. Rev. Lett 79, 1953 (1997), by Lu-Ming Duan and Guang-Can Guo, are questionable. In particular we stress that the environmental noise considered by the authors belongs to a very special class
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