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Abstract:

We present in a unified manner the existing methods for scalable partial quantum process tomography. We focus on two main approaches: the one presented in Bendersky [Phys. Rev. Lett.PRLTAO0031-900710.1103/PhysRevLett.100.190403 100, 190403 (2008)] and the ones described, respectively, in Emerson [ScienceSCIEAS0036-807510.1126/science.1145699 317, 1893 (2007)] and López [Phys. Rev. APLRAAN1050-294710.1103/PhysRevA.79.042328 79, 042328 (2009)], which can be combined together. The methods share an essential feature: They are based on the idea that the tomography of a quantum map can be efficiently performed by studying certain properties of a twirling of such a map. From this perspective, in this paper we present extensions, improvements, and comparative analyses of the scalable methods for partial quantum process tomography. We also clarify the significance of the extracted information, and we introduce interesting and useful properties of the χ-matrix representation of quantum maps that can be used to establish a clearer path toward achieving full tomography of quantum processes in a scalable way. © 2010 The American Physical Society.

Registro:

Documento: Artículo
Título:Progress toward scalable tomography of quantum maps using twirling-based methods and information hierarchies
Autor:López, C.C.; Bendersky, A.; Paz, J.P.; Cory, D.G.
Filiación:Department of Nuclear Science and Engineering, MIT, Cambridge, MA 02139, United States
Theoretische Physik, Universität des Saarlandes, D-66041 Saarbrücken, Germany
Departament de Física, Universitat Autònoma de Barcelona, E-08193 Bellaterra, Spain
Departamento de Física, FCEyN, Ciudad Universitaria, 1428 Buenos Aires, Argentina
Perimeter Institute for Theoretical Physics, Waterloo, ON N2J 2W9, Canada
Palabras clave:Comparative analysis; Emerson; Existing method; Matrix representation; Quantum maps; Quantum process; Quantum process tomography; Scalable methods; Useful properties; Scalability; Tomography
Año:2010
Volumen:81
Número:6
DOI: http://dx.doi.org/10.1103/PhysRevA.81.062113
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_v81_n6_p_Lopez

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Citas:

---------- APA ----------
López, C.C., Bendersky, A., Paz, J.P. & Cory, D.G. (2010) . Progress toward scalable tomography of quantum maps using twirling-based methods and information hierarchies. Physical Review A - Atomic, Molecular, and Optical Physics, 81(6).
http://dx.doi.org/10.1103/PhysRevA.81.062113
---------- CHICAGO ----------
López, C.C., Bendersky, A., Paz, J.P., Cory, D.G. "Progress toward scalable tomography of quantum maps using twirling-based methods and information hierarchies" . Physical Review A - Atomic, Molecular, and Optical Physics 81, no. 6 (2010).
http://dx.doi.org/10.1103/PhysRevA.81.062113
---------- MLA ----------
López, C.C., Bendersky, A., Paz, J.P., Cory, D.G. "Progress toward scalable tomography of quantum maps using twirling-based methods and information hierarchies" . Physical Review A - Atomic, Molecular, and Optical Physics, vol. 81, no. 6, 2010.
http://dx.doi.org/10.1103/PhysRevA.81.062113
---------- VANCOUVER ----------
López, C.C., Bendersky, A., Paz, J.P., Cory, D.G. Progress toward scalable tomography of quantum maps using twirling-based methods and information hierarchies. Phys Rev A. 2010;81(6).
http://dx.doi.org/10.1103/PhysRevA.81.062113