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research article

Efficient Quantum Algorithms for GHZ and W States, and Implementation on the IBM Quantum Computer

Cruz, Diogo
•
Fournier, Romain
•
Gremion, Fabien
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June 1, 2019
Advanced Quantum Technologies

Efficient deterministic algorithms are proposed with logarithmic step complexities for the generation of entangled GHZ(N) and W-N states useful for quantum networks, and an implementation on the IBM quantum computer up to N = 16 is demonstrated. Improved quality is then investigated using full quantum tomography for low-N GHZ and W states. This is completed by parity oscillations and histogram distance for large-N GHZ and W states, respectively. Robust states are built with about twice the number of quantum bits which were previously achieved.

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Type
research article
DOI
10.1002/qute.201900015
Web of Science ID

WOS:000548077500008

Author(s)
Cruz, Diogo
•
Fournier, Romain
•
Gremion, Fabien
•
Jeannerot, Alix  
•
Komagata, Kenichi
•
Tosic, Tara
•
Thiesbrummel, Jarla
•
Chan, Chun Lam  
•
Macris, Nicolas  
•
Dupertuis, Marc-Andre  
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Date Issued

2019-06-01

Publisher

WILEY

Published in
Advanced Quantum Technologies
Volume

2

Issue

5-6

Article Number

1900015

Subjects

Quantum Science & Technology

•

Optics

•

Physics

•

efficient algorithm

•

ghz states

•

multipartite entanglement

•

quantum computer

•

quantum networks

Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
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LTHC  
LINX  
Available on Infoscience
July 29, 2020
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/170426
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