Decoherence, pointer engineering, and quantum state protection.


We present a proposal for protecting states against decoherence, based on the engineering of pointer states. We apply this procedure to the vibrational motion of a trapped ion, and show how to protect qubits, squeezed states, approximate phase eigenstates, and superpositions of coherent states. 


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@article{Carvalho2001DecoherencePE, title={Decoherence, pointer engineering, and quantum state protection.}, author={Andr{\'e} R. R. Carvalho and Pierre D. Milman and R. L. de Matos Filho and Luiz Davidovich}, journal={Physical review letters}, year={2001}, volume={86 22}, pages={4988-91} }