Optimal error tracking via quantum coding and continuous syndrome measurement

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dc.creatorvan Handel, Ramon
dc.creatorMabuchi, Hideo
dc.date2005-11-22
dc.date.accessioned2026-07-07T06:52:52Z
dc.date.available2026-07-07T06:52:52Z
dc.descriptionWe revisit a scenario of continuous quantum error detection proposed by Ahn, Doherty and Landahl [Phys. Rev. A 65, 042301 (2002)] and construct optimal filters for tracking accumulative errors. These filters turn out to be of a canonical form from hybrid control theory; we numerically assess their performance for the bit-flip and five-qubit codes. We show that a tight upper bound on the stochastic decay of encoded fidelity can be computed from the measurement records. Our results provide an informative case study in decoherence suppression with finite-strength measurement.
dc.identifierhttps://arxiv.org/abs/quant-ph/0511221
dc.identifierhttp://arxiv.org/abs/quant-ph/0511221
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/105440
dc.subjectQuantum Physics
dc.titleOptimal error tracking via quantum coding and continuous syndrome measurement
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