Phase analysis on the error scaling of entangled qubits in a 53-qubit system

Abstract We have studied carefully the behaviors of entangled qubits on the IBM Rochester with various connectivities and under a “noisy” environment. A phase trajectory analysis based on our measurements of the GHZ-like states is performed. Our results point to an important fact that entangled qubi...

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Autores principales:	Wei-Jia Huang, Wei-Chen Chien, Chien-Hung Cho, Che-Chun Huang, Tsung-Wei Huang, Seng Ghee Tan, C. Cao, Bei Zeng, Ching-Ray Chang
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/a7fcea496e054fe6bce3763dbeb69e9f
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spelling	oai:doaj.org-article:a7fcea496e054fe6bce3763dbeb69e9f2021-12-02T16:14:03ZPhase analysis on the error scaling of entangled qubits in a 53-qubit system10.1038/s41598-021-93856-82045-2322https://doaj.org/article/a7fcea496e054fe6bce3763dbeb69e9f2021-07-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-93856-8https://doaj.org/toc/2045-2322Abstract We have studied carefully the behaviors of entangled qubits on the IBM Rochester with various connectivities and under a “noisy” environment. A phase trajectory analysis based on our measurements of the GHZ-like states is performed. Our results point to an important fact that entangled qubits are “protected” against environmental noise by a scaling property that impacts only the weighting of their amplitudes. The reproducibility of most measurements has been confirmed within a reasonably short gate operation time. But there still are a few combinations of qubits that show significant entanglement evolution in the form of transitions between quantum states. The phase trajectory of an entangled evolution, and the impact of the sudden death of GHZ-like states and the revival of newly excited states are analyzed in details. All observed trajectories of entangled qubits arise under the influences of the newly excited states in a “noisy” intermediate-scale quantum (NISQ) computer.Wei-Jia HuangWei-Chen ChienChien-Hung ChoChe-Chun HuangTsung-Wei HuangSeng Ghee TanC. CaoBei ZengChing-Ray ChangNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-9 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Wei-Jia Huang Wei-Chen Chien Chien-Hung Cho Che-Chun Huang Tsung-Wei Huang Seng Ghee Tan C. Cao Bei Zeng Ching-Ray Chang Phase analysis on the error scaling of entangled qubits in a 53-qubit system
description	Abstract We have studied carefully the behaviors of entangled qubits on the IBM Rochester with various connectivities and under a “noisy” environment. A phase trajectory analysis based on our measurements of the GHZ-like states is performed. Our results point to an important fact that entangled qubits are “protected” against environmental noise by a scaling property that impacts only the weighting of their amplitudes. The reproducibility of most measurements has been confirmed within a reasonably short gate operation time. But there still are a few combinations of qubits that show significant entanglement evolution in the form of transitions between quantum states. The phase trajectory of an entangled evolution, and the impact of the sudden death of GHZ-like states and the revival of newly excited states are analyzed in details. All observed trajectories of entangled qubits arise under the influences of the newly excited states in a “noisy” intermediate-scale quantum (NISQ) computer.
format	article
author	Wei-Jia Huang Wei-Chen Chien Chien-Hung Cho Che-Chun Huang Tsung-Wei Huang Seng Ghee Tan C. Cao Bei Zeng Ching-Ray Chang
author_facet	Wei-Jia Huang Wei-Chen Chien Chien-Hung Cho Che-Chun Huang Tsung-Wei Huang Seng Ghee Tan C. Cao Bei Zeng Ching-Ray Chang
author_sort	Wei-Jia Huang
title	Phase analysis on the error scaling of entangled qubits in a 53-qubit system
title_short	Phase analysis on the error scaling of entangled qubits in a 53-qubit system
title_full	Phase analysis on the error scaling of entangled qubits in a 53-qubit system
title_fullStr	Phase analysis on the error scaling of entangled qubits in a 53-qubit system
title_full_unstemmed	Phase analysis on the error scaling of entangled qubits in a 53-qubit system
title_sort	phase analysis on the error scaling of entangled qubits in a 53-qubit system
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/a7fcea496e054fe6bce3763dbeb69e9f
work_keys_str_mv	AT weijiahuang phaseanalysisontheerrorscalingofentangledqubitsina53qubitsystem AT weichenchien phaseanalysisontheerrorscalingofentangledqubitsina53qubitsystem AT chienhungcho phaseanalysisontheerrorscalingofentangledqubitsina53qubitsystem AT chechunhuang phaseanalysisontheerrorscalingofentangledqubitsina53qubitsystem AT tsungweihuang phaseanalysisontheerrorscalingofentangledqubitsina53qubitsystem AT senggheetan phaseanalysisontheerrorscalingofentangledqubitsina53qubitsystem AT ccao phaseanalysisontheerrorscalingofentangledqubitsina53qubitsystem AT beizeng phaseanalysisontheerrorscalingofentangledqubitsina53qubitsystem AT chingraychang phaseanalysisontheerrorscalingofentangledqubitsina53qubitsystem
_version_	1718384368506896384

Phase analysis on the error scaling of entangled qubits in a 53-qubit system

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