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Search Results: 1 - 10 of 297633 matches for " J. Ollivier "
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Note sur l'utilisation des résultats des épreuves de descendance par les sélectionneurs de porc en france de 1956 a 1965
Zofia J Czajewska, L Ollivier
Genetics Selection Evolution , 1969, DOI: 10.1186/1297-9686-1-1-71
Abstract:
Description of a quantum convolutional code
H. Ollivier,J. -P. Tillich
Physics , 2003, DOI: 10.1103/PhysRevLett.91.177902
Abstract: We describe a quantum error correction scheme aimed at protecting a flow of quantum information over long distance communication. It is largely inspired by the theory of classical convolutional codes which are used in similar circumstances in classical communication. The particular example shown here uses the stabilizer formalism, which provides an explicit encoding circuit. An associated error estimation algorithm is given explicitly and shown to provide the most likely error over any memoryless quantum channel, while its complexity grows only linearly with the number of encoded qubits.
Quantum convolutional codes: fundamentals
H. Ollivier,J. -P. Tillich
Physics , 2004,
Abstract: We describe the theory of quantum convolutional error correcting codes. These codes are aimed at protecting a flow of quantum information over long distance communication. They are largely inspired by their classical analogs which are used in similar circumstances in classical communication. In this article, we provide an efficient polynomial formalism for describing their stabilizer group, derive an on-line encoding circuit with linear gate complexity and study error propagation together with the existence of on-line decoding. Finally, we provide a maximum likelihood error estimation algorithm with linear classical complexity for any memoryless channel.
Relations entre les réactions du porc a un choc thermique et la qualité de la viande
J Charpentier, G Monin, L Ollivier
Genetics Selection Evolution , 1972, DOI: 10.1186/1297-9686-4-1-134b
Abstract:
Universal Quantum Cloning in Cavity QED
P. Milman,H. Ollivier,J. M. Raimond
Physics , 2002, DOI: 10.1103/PhysRevA.67.012314
Abstract: We propose an implementation of an universal quantum cloning machine [UQCM, Hillery and Buzek, Phys. Rev. A {\bf 56}, 3446 (1997)] in a Cavity Quantum Electrodynamics (CQED) experiment. This UQCM acts on the electronic states of atoms that interact with the electromagnetic field of a high $Q$ cavity. We discuss here the specific case of the $1 \to 2$ cloning process using either a one- or a two-cavity configuration.
Constructions and performance of classes of quantum LDPC codes
T. Camara,H. Ollivier,J. -P. Tillich
Physics , 2005,
Abstract: Two methods for constructing quantum LDPC codes are presented. We explain how to overcome the difficulty of finding a set of low weight generators for the stabilizer group of the code. Both approaches are based on some graph representation of the generators of the stabilizer group and on simple local rules that ensure commutativity. A message passing algorithm for generic quantum LDPC codes is also introduced. Finally, we provide two specific examples of quantum LDPC codes of rate 1/2 obtained by our methods, together with a numerical simulation of their performance over the depolarizing channel.
Expérience de sélection sur la croissance du tissu maigre chez le porc, avec des pères répétés: évolution génétique des caractères soumis à la sélection
J Ca?ón, J Gruand, JP Gutiérrez, L Ollivier
Genetics Selection Evolution , 1992, DOI: 10.1186/1297-9686-24-5-449
Abstract:
Dix ans d'une expérience de sélection individuelle sur des verrats utilisés en insémination artificielle. II. Paramètres génétiques estimés
L Ollivier, Marie-Reine Perretant, J Gruand, C Felgines
Genetics Selection Evolution , 1983, DOI: 10.1186/1297-9686-15-1-99
Abstract:
Héritabilité réalisée pour la taille de portée dans la sélection de truies dites ? hyperprolifiques ?
Pascale Le Roy, C Legault, J Gruand, L Ollivier
Genetics Selection Evolution , 1987, DOI: 10.1186/1297-9686-19-3-351
Abstract:
Le calcul de l'effectif génétique des populations animales
L Ollivier
Genetics Selection Evolution , 1973, DOI: 10.1186/1297-9686-5-3-363
Abstract:
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