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dc.date.accessioned 2009-10-09T11:50:17Z
dc.date.available 2009-10-09T03:00:00Z
dc.date.issued 2009
dc.identifier.uri http://hdl.handle.net/10915/9651
dc.description.abstract A valid Calderbank-Shor-Steane (CSS) error correction code requires two classical linear codes for the preparation of the initial state (codewords). This code allow to correct for certain errors caused by an unwanted interaction which produces a degraded quantum state. However, this initial seven qubits encoding can be obtained from a maximally entangled Bell state (0000000>+|1111111)/√ through an operation Hint whose explicit expression is derived in the present work. The price the CSS syndrome has to pay due to its classical grounds is that the operator Hint is not unitary. In other words, Hint is not a valid quantum gate i. e. this does not represent a logical operation. Consequently, the final state is not completely robust for the standard cryptography of Quantum Computation. Besides to be a non unitary operator, Hint, is not reversible introducing with this dissipative effects that destroy the coherence in the quantum computer. Additionally, this operator is not invariant under rotations of the protector qubits inducing then preferred directions of the propagation of the logical information. These are indeed the reasons that prompt us for extending the semi classical CSS quantum error correction codes formalism to a pure quantum Hamming codes. en
dc.format.extent 5 p. es
dc.language en es
dc.title Semiclassical grounds of the Calderbank-Shor-Steane quantum error correction codes es
dc.type Articulo es
sedici.identifier.uri http://journal.info.unlp.edu.ar/journal/journal26/papers/JCST-Oct09-2.pdf es
sedici.creator.person Avila Aoki, Manuel es
sedici.subject.materias Ciencias Informáticas es
sedici.subject.keyword quantum information en
sedici.subject.keyword quantum computation en
sedici.subject.keyword linear classical correction codes en
sedici.subject.keyword encoding en
sedici.subject.keyword syndrome en
sedici.subject.keyword quantum error correction codes en
sedici.description.fulltext true es
mods.originInfo.place Facultad de Informática es
sedici.subtype Articulo es
sedici.rights.license Creative Commons Attribution-NonCommercial 3.0 Unported (CC BY-NC 3.0)
sedici.rights.uri http://creativecommons.org/licenses/by-nc/3.0/
sedici.description.peerReview peer-review es
sedici2003.identifier ARG-UNLP-ART-0000005278 es
sedici.relation.journalTitle Journal of Computer Science & Technology es
sedici.relation.journalVolumeAndIssue vol. 9, no. 2 es
sedici.subject.acmcss98 Coding Tools and Techniques es
sedici.subject.acmcss98 Data encryption standard (DES) es


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