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Abstract:

We analyze and further develop a method to represent the quantum state of a system of qubits in a phase-space grid of points where . The method, which was recently proposed by Wootters and co-workers (Gibbons, Phys. Rev. A 70, 062101 (2004).), is based on the use of the elements of the finite field to label the phase-space axes. We present a self-contained overview of the method, we give insights into some of its features, and we apply it to investigate problems which are of interest for quantum-information theory: We analyze the phase-space representation of stabilizer states and quantum error-correction codes and present a phase-space solution to the so-called mean king problem. © 2005 The American Physical Society.

Registro:

Documento: Artículo
Título:Qubits in phase space: Wigner-function approach to quantum-error correction and the mean-king problem
Autor:Paz, J.P.; Roncaglia, A.J.; Saraceno, M.
Filiación:Departamento de Fisica, FCEyN, Ciudad Universitaria, 1428 Buenos Aires, Argentina
Theoretical Division, LANL, MSB213, Los Alamos, NM 87545, United States
Unidad de Actividad Fisica, Tandar, CNEA, Buenos Aires, Argentina
Escuela de Ciencia y Tecnologica, Universidad Nacional de San Martin, Buenos Aires, Argentina
Palabras clave:Phase-space axes; Quantum error-correction codes; Quantum-information theory; Error analysis; Information theory; Problem solving; Quantum theory
Año:2005
Volumen:72
Número:1
DOI: http://dx.doi.org/10.1103/PhysRevA.72.012309
Título revista:Physical Review A - Atomic, Molecular, and Optical Physics
Título revista abreviado:Phys Rev A
ISSN:10502947
CODEN:PLRAA
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_10502947_v72_n1_p_Paz

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Citas:

---------- APA ----------
Paz, J.P., Roncaglia, A.J. & Saraceno, M. (2005) . Qubits in phase space: Wigner-function approach to quantum-error correction and the mean-king problem. Physical Review A - Atomic, Molecular, and Optical Physics, 72(1).
http://dx.doi.org/10.1103/PhysRevA.72.012309
---------- CHICAGO ----------
Paz, J.P., Roncaglia, A.J., Saraceno, M. "Qubits in phase space: Wigner-function approach to quantum-error correction and the mean-king problem" . Physical Review A - Atomic, Molecular, and Optical Physics 72, no. 1 (2005).
http://dx.doi.org/10.1103/PhysRevA.72.012309
---------- MLA ----------
Paz, J.P., Roncaglia, A.J., Saraceno, M. "Qubits in phase space: Wigner-function approach to quantum-error correction and the mean-king problem" . Physical Review A - Atomic, Molecular, and Optical Physics, vol. 72, no. 1, 2005.
http://dx.doi.org/10.1103/PhysRevA.72.012309
---------- VANCOUVER ----------
Paz, J.P., Roncaglia, A.J., Saraceno, M. Qubits in phase space: Wigner-function approach to quantum-error correction and the mean-king problem. Phys Rev A. 2005;72(1).
http://dx.doi.org/10.1103/PhysRevA.72.012309