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We show how macroscopically distinct quantum superposition states (Schr\"odinger cat states) may be used as logical qubit encodings for the correction of spontaneous emission errors. Spontaneous emission causes a bit flip error, which is easily corrected by a standard error correction circuit. The method works arbitrarily well as the distance between the amplitudes of the superposed coherent states increases.
Cochrane et al. (Thu,) studied this question.
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