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01.07.2018

Spin coherent states phenomena probed by quantum state tomography in Zeeman perturbed nuclear quadrupole resonance

verfasst von: João Teles, Ruben Auccaise, Christian Rivera-Ascona, Arthur G. Araujo-Ferreira, José P. Andreeta, Tito J. Bonagamba

Erschienen in: Quantum Information Processing | Ausgabe 7/2018

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Abstract

Recently, we reported an experimental implementation of quantum information processing (QIP) by nuclear quadrupole resonance (NQR). In this work, we present the first quantum state tomography (QST) experimental implementation in the NQR QIP context. Two approaches are proposed, employing coherence selection by temporal and spatial averaging. Conditions for reduction in the number of cycling steps are analyzed, which can be helpful for larger spin systems. The QST method was applied to the study of spin coherent states, where the alignment-to-orientation phenomenon and the evolution of squeezed spin states show the effect of the nonlinear quadrupole interaction intrinsic to the NQR system. The quantum operations were implemented using a single-crystal sample of KClO\(_{3}\) and observing \(^{35}\)Cl nuclei, which posses spin 3/2.

Vorheriger Artikel Mapping from multiple-control Toffoli circuits to linear nearest neighbor quantum circuits

Nächster Artikel Self-assisted complete analysis of three-photon hyperentangled Greenberger–Horne–Zeilinger states with nitrogen-vacancy centers in microcavities

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Titel: Spin coherent states phenomena probed by quantum state tomography in Zeeman perturbed nuclear quadrupole resonance
verfasst von: João Teles
Ruben Auccaise
Christian Rivera-Ascona
Arthur G. Araujo-Ferreira
José P. Andreeta
Tito J. Bonagamba
Publikationsdatum: 01.07.2018
Verlag: Springer US
Erschienen in: Quantum Information Processing / Ausgabe 7/2018
Print ISSN: 1570-0755
Elektronische ISSN: 1573-1332
DOI: https://doi.org/10.1007/s11128-018-1947-1

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