Quantum Error-Correcting Codes with Preexisting Protected Qubits

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dc.creatorDong, Ying
dc.creatorDeng, Xiuhao
dc.creatorJiang, Mingming
dc.creatorChen, Qing
dc.creatorYu, Sixia
dc.date2008-01-09
dc.date.accessioned2026-07-07T08:53:29Z
dc.date.available2026-07-07T08:53:29Z
dc.descriptionWe provide a systematic way of constructing entanglement-assisted quantum error-correcting codes via graph states in the scenario of preexisting perfectly protected qubits. It turns out that the preexisting entanglement can help beat the quantum Hamming bound and can enhance (not only behave as an assistance) the performance of the quantum error correction. Furthermore we generalize the error models to the case of not-so-perfectly-protected qubits and introduce the quantity infidelity as a figure of merit and show that our code outperforms also the ordinary quantum error-correcting codes.
dc.description4 pages 2 figures
dc.identifierhttps://arxiv.org/abs/0801.1379
dc.identifierhttp://arxiv.org/abs/0801.1379
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/145637
dc.subjectQuantum Physics
dc.titleQuantum Error-Correcting Codes with Preexisting Protected Qubits
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