Macroscopically distinct quantum-superposition states as a bosonic code for amplitude damping
- 1 April 1999
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review A
- Vol. 59 (4) , 2631-2634
- https://doi.org/10.1103/physreva.59.2631
Abstract
We show how macroscopically distinct quantum superposition states (Schrödinger 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.Keywords
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