Efficient Quantum Algorithms for GHZ and W States, and Implementation on the IBM Quantum Computer (Adv. Quantum Technol. 5‐6/2019)

Efficient Quantum Algorithms for GHZ and W States, and Implementation on the IBM Quantum Computer (Adv. Quantum Technol. 5‐6/2019)

Entanglement is a fundamental resource in quantum information and technology. In article number 1900015, Clément Javerzac‐Galy and co‐workers investigate efficient new algorithms to create N‐qubit Greenberger–Horne–Zeilinger (GHZ) and W states with time‐complexity scaling linearly and logarithmicall...

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Veröffentlicht in:Advanced quantum technologies (Online) 2019-06, Vol.2 (5-6), p.n/a
Hauptverfasser: Cruz, Diogo, Fournier, Romain, Gremion, Fabien, Jeannerot, Alix, Komagata, Kenichi, Tosic, Tara, Thiesbrummel, Jarla, Chan, Chun Lam, Macris, Nicolas, Dupertuis, Marc‐André, Javerzac‐Galy, Clément
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container_issue 5-6
container_start_page
container_title Advanced quantum technologies (Online)
container_volume 2
creator Cruz, Diogo
Fournier, Romain
Gremion, Fabien
Jeannerot, Alix
Komagata, Kenichi
Tosic, Tara
Thiesbrummel, Jarla
Chan, Chun Lam
Macris, Nicolas
Dupertuis, Marc‐André
Javerzac‐Galy, Clément
description Entanglement is a fundamental resource in quantum information and technology. In article number 1900015, Clément Javerzac‐Galy and co‐workers investigate efficient new algorithms to create N‐qubit Greenberger–Horne–Zeilinger (GHZ) and W states with time‐complexity scaling linearly and logarithmically in N. Quantum circuits are implemented on the IBM quantum computer up to N = 16, and entanglement is investigated through tomography (and other methods) as shown in the cover picture. While the fidelity decreases with increasing N, it does so more slowly for the logarithmic algorithms. (Image design by Chun Lam Chan.)
doi_str_mv 10.1002/qute.201970031
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title Efficient Quantum Algorithms for GHZ and W States, and Implementation on the IBM Quantum Computer (Adv. Quantum Technol. 5‐6/2019)
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