Decoherence, pointer engineering and quantum state protection
A. R. R. Carvalho, P. Milman, R. L. de Matos Filho, L. Davidovich
Abstract
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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