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Quantum Error Correction Beyond Break-Even.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Quantum Error Correction Beyond Break-Even./
作者:	Sivak, Volodymyr.
面頁冊數:	1 online resource (123 pages)
附註:	Source: Dissertations Abstracts International, Volume: 85-01, Section: B.
Contained By:	Dissertations Abstracts International85-01B.
標題:	Quantum physics. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=30000277click for full text (PQDT)
ISBN:	9798379778279

Quantum Error Correction Beyond Break-Even.
Sivak, Volodymyr.

Quantum Error Correction Beyond Break-Even. - 1 online resource (123 pages)

Source: Dissertations Abstracts International, Volume: 85-01, Section: B.

Thesis (Ph.D.)--Yale University, 2023.

Includes bibliographical references

The ambition of harnessing the quantum for computation is at odds with the fundamental phenomenon of decoherence. The purpose of quantum error correction (QEC) is to counteract the natural tendency of a complex system to decohere. This cooperative process, which requires participation of multiple quantum and classical components, creates a special type of dissipation that removes the entropy caused by the errors faster than the rate at which these errors corrupt the stored quantum information. Previous experimental attempts to engineer such a process faced an excessive generation of errors that overwhelmed the error-correcting capability of the process itself. Whether it is practically possible to utilize QEC for extending quantum coherence thus remains an open question. The goal of this thesis work is to answer this question. Our main result is the first demonstration of a fully stabilized and error-corrected logical qubit whose quantum coherence is significantly longer than that of all the imperfect quantum components involved in the QEC process, beating the best of them with a coherence gain of G = 2.27 ± 0.07. We achieved this performance by combining innovations in several domains including the fabrication of superconducting quantum circuits and model-free reinforcement learning. The experiment reported in this thesis uplifts quantum error correction from proof-of-principle studies to a practical tool for extending quantum coherence.

Electronic reproduction.
Ann Arbor, Mich. :
ProQuest,
2023

Mode of access: World Wide Web

ISBN: 9798379778279Subjects--Topical Terms:

726746
Quantum physics.
Subjects--Index Terms:

Gottesman-Kitaev-PreskillIndex Terms--Genre/Form:

542853
Electronic books.

Quantum Error Correction Beyond Break-Even.
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502 $a Thesis (Ph.D.)--Yale University, 2023.
504 $a Includes bibliographical references
520 $a The ambition of harnessing the quantum for computation is at odds with the fundamental phenomenon of decoherence. The purpose of quantum error correction (QEC) is to counteract the natural tendency of a complex system to decohere. This cooperative process, which requires participation of multiple quantum and classical components, creates a special type of dissipation that removes the entropy caused by the errors faster than the rate at which these errors corrupt the stored quantum information. Previous experimental attempts to engineer such a process faced an excessive generation of errors that overwhelmed the error-correcting capability of the process itself. Whether it is practically possible to utilize QEC for extending quantum coherence thus remains an open question. The goal of this thesis work is to answer this question. Our main result is the first demonstration of a fully stabilized and error-corrected logical qubit whose quantum coherence is significantly longer than that of all the imperfect quantum components involved in the QEC process, beating the best of them with a coherence gain of G = 2.27 ± 0.07. We achieved this performance by combining innovations in several domains including the fabrication of superconducting quantum circuits and model-free reinforcement learning. The experiment reported in this thesis uplifts quantum error correction from proof-of-principle studies to a practical tool for extending quantum coherence.
533 $a Electronic reproduction. $b Ann Arbor, Mich. : $c ProQuest, $d 2023
538 $a Mode of access: World Wide Web
650 4 $a Quantum physics. $3 726746
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