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|Title:||Entanglement-enhanced quantum error-correcting codes|
|Citation:||Dong, Y., Deng, X., Jiang, M., Chen, Q., Yu, S. (2009-04-01). Entanglement-enhanced quantum error-correcting codes. Physical Review A - Atomic, Molecular, and Optical Physics 79 (4) : -. ScholarBank@NUS Repository. https://doi.org/10.1103/PhysRevA.79.042342|
|Abstract:||Via explicit examples we show that the pre-existing entanglement can really enhance (not only behave as an assistance for) the efficiency of the quantum error-correcting codes (QECCs) in a single block of encoding or decoding as well as help in beating the quantum Hamming bound. A systematic approach to constructing entanglement-assisted (or enhanced) quantum error-correcting codes (EAQECCs) via graph states is also presented, and an infinite family of entanglement-enhanced codes has been constructed. Furthermore we generalize the EAQECCs to the case of not-so-perfectly protected qubit and introduce the quantity infidelity as a figure of merit and show that the EAQECCs also outperform the ordinary QECCs. © 2009 The American Physical Society.|
|Source Title:||Physical Review A - Atomic, Molecular, and Optical Physics|
|Appears in Collections:||Staff Publications|
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