Extracting perfect GHZ states from imperfect weighted graph states via entanglement concentration

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Bibliographische Detailangaben
Hauptverfasser:	Frantzeskakis, Rafail, Liu, Chenxu, Raissi, Zahra, Barnes, Edwin, Economou, Sophia E.
Format:	Preprint
Veröffentlicht:	2022
Schlagworte:	Quantum Physics
Online-Zugang:	Acceder al recurso
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author	Frantzeskakis, Rafail Liu, Chenxu Raissi, Zahra Barnes, Edwin Economou, Sophia E.
author_facet	Frantzeskakis, Rafail Liu, Chenxu Raissi, Zahra Barnes, Edwin Economou, Sophia E.
contents	Photonic GHZ states serve as the central resource for a number of important applications in quantum information science, including secret sharing, sensing, and fusion-based quantum computing. The use of photon-emitter entangling gates is a promising approach to creating these states that sidesteps many of the difficulties associated with intrinsically probabilistic methods based on linear optics. However, the efficient creation of high-fidelity GHZ states of many photons remains an outstanding challenge due to both coherent and incoherent errors during the generation process. Here, we propose an entanglement concentration protocol that is capable of generating perfect GHZ states using only local gates and measurements on imperfect weighted graph states. We show that our protocol is both efficient and robust to incoherent noise errors.
format	Preprint
id	arxiv_https___arxiv_org_abs_2203_07210
institution	arXiv
publishDate	2022
record_format	arxiv
spellingShingle	Extracting perfect GHZ states from imperfect weighted graph states via entanglement concentration Frantzeskakis, Rafail Liu, Chenxu Raissi, Zahra Barnes, Edwin Economou, Sophia E. Quantum Physics Photonic GHZ states serve as the central resource for a number of important applications in quantum information science, including secret sharing, sensing, and fusion-based quantum computing. The use of photon-emitter entangling gates is a promising approach to creating these states that sidesteps many of the difficulties associated with intrinsically probabilistic methods based on linear optics. However, the efficient creation of high-fidelity GHZ states of many photons remains an outstanding challenge due to both coherent and incoherent errors during the generation process. Here, we propose an entanglement concentration protocol that is capable of generating perfect GHZ states using only local gates and measurements on imperfect weighted graph states. We show that our protocol is both efficient and robust to incoherent noise errors.
title	Extracting perfect GHZ states from imperfect weighted graph states via entanglement concentration
topic	Quantum Physics
url	https://arxiv.org/abs/2203.07210

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