Eigenstate control of plasmon wavepackets with electron-channel blockade

Takada, Shintaro; Georgiou, Giorgos; Wang, Junliang; Okazaki, Yuma; Nakamura, Shuji; Pomaranski, David; Ludwig, Arne; Wieck, Andreas D.; Yamamoto, Michihisa; Bäuerle, Christopher; Kaneko, Nobu Hisa

doi:https://doi.org/10.1038/s41467-025-64876-z

Eigenstate control of plasmon wavepackets with electron-channel blockade

Takada, Shintaro; Georgiou, Giorgos; Wang, Junliang et al.

Nature Communications, 2025, 16, 9942

アクセス数:78件（2026-02-15 20:41 集計）

固定URL: https://hdl.handle.net/11094/103690

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タイトル	Eigenstate control of plasmon wavepackets with electron-channel blockade
著者	NRID 1000090805144 1000090805144 ORCID 0000-0002-7831-585X 0000-0002-7831-585X researchmap permalink shintaro_takada shintaro_takada Scopus Author ID 53664404100 53664404100 著者名 Takada, Shintaro
	著者名 Georgiou, Giorgos
	著者名 Wang, Junliang
	NRID 1000060738277 1000060738277 著者名 Okazaki, Yuma
	NRID 1000070613991 1000070613991 著者名 Nakamura, Shuji
	NRID 1000050938727 1000050938727 著者名 Pomaranski, David
	著者名 Ludwig, Arne
	著者名 Wieck, Andreas D.
	NRID 1000000376493 1000000376493 著者名 Yamamoto, Michihisa
	著者名 Bäuerle, Christopher
	NRID 1000030371032 1000030371032 著者名 Kaneko, Nobu Hisa
内容	Takada S., Georgiou G., Wang J., et al. Eigenstate control of plasmon wavepackets with electron-channel blockade. Nature Communications 16, 9942 (2025); https://doi.org/10.1038/s41467-025-64876-z.
抄録	Coherent manipulation of plasmon wavepackets in solid-state systems is crucial for advancing nanoscale electronic devices, offering a unique platform for quantum information processing based on propagating quantum bits. Controlling the eigenstate of plasmon wavepackets is essential, as it determines their propagation speed and hence the number of quantum operations that can be performed during their flight time through a quantum system. When plasmon wavepackets are generated by short voltage pulses and transmitted through nanoscale devices, they distribute among multiple electron conduction channels via Coulomb interactions, a phenomenon known as charge fractionalisation. This spreading complicates plasmon manipulation in quantum circuits and makes precise control of the eigenstates of plasmon wavepackets challenging. Using a cavity, we demonstrate the ability to isolate and select electron conduction channels contributing to plasmon excitation, thus enabling precise control of plasmon eigenstates. Specifically, we observe an electron-channel blockade effect, where charge fractionalisation into cavity-confined channels is suppressed due to the plasmon’s narrow energy distribution, enabling more stable and predictable plasmonic circuits. This technique provides a versatile tool for designing plasmonic circuits, offering the ability to tailor plasmon speed through local parameters, minimise unwanted plasmon excitation in adjacent circuits, and enable the precise selection of electron-channel plasmon eigenstates in quantum interferometers.
出版者	Nature Research
収録物名	Nature Communications
巻(号)	16
ページ	9942
刊行年月	2025-11-12
言語	英語
ハンドルURL	https://hdl.handle.net/11094/103690
eISSN	20411723
関連情報 (isIdenticalTo)	DOI (出版社版) https://doi.org/10.1038/s41467-025-64876-z
アクセス権	open access
権利情報	This article is licensed under a Creative Commons Attribution 4.0 International License.
出版タイプ	Version of Record
カテゴリ	学術雑誌論文 Journal Article

資源タイプ	学術雑誌論文
ローカル資源タイプ	学術雑誌論文
DCMI資源タイプ	text
DCTERMS.bibliographicCitation	Nature Communications. 2025, 16, p. 9942
DC.title	Eigenstate control of plasmon wavepackets with electron-channel blockade
DC.creator	Takada, Shintaro
	Georgiou, Giorgos
	Wang, Junliang
	Okazaki, Yuma
	Nakamura, Shuji
	Pomaranski, David
	Ludwig, Arne
	Wieck, Andreas D.
	Yamamoto, Michihisa
	Bäuerle, Christopher
	Kaneko, Nobu Hisa
DC.publisher	Nature Research
DC.language' scheme='DCTERMS.RFC1766	英語
DC.type' scheme='DCTERMS.DCMIType	text
DCTERMS.issued' scheme='DCTERMS.W3CDTF	2025-11-12
DC.identifier	https://doi.org/10.1038/s41467-025-64876-z
DC.description	Takada S., Georgiou G., Wang J., et al. Eigenstate control of plasmon wavepackets with electron-channel blockade. Nature Communications 16, 9942 (2025); https://doi.org/10.1038/s41467-025-64876-z.
DCTERMS.abstract	Coherent manipulation of plasmon wavepackets in solid-state systems is crucial for advancing nanoscale electronic devices, offering a unique platform for quantum information processing based on propagating quantum bits. Controlling the eigenstate of plasmon wavepackets is essential, as it determines their propagation speed and hence the number of quantum operations that can be performed during their flight time through a quantum system. When plasmon wavepackets are generated by short voltage pulses and transmitted through nanoscale devices, they distribute among multiple electron conduction channels via Coulomb interactions, a phenomenon known as charge fractionalisation. This spreading complicates plasmon manipulation in quantum circuits and makes precise control of the eigenstates of plasmon wavepackets challenging. Using a cavity, we demonstrate the ability to isolate and select electron conduction channels contributing to plasmon excitation, thus enabling precise control of plasmon eigenstates. Specifically, we observe an electron-channel blockade effect, where charge fractionalisation into cavity-confined channels is suppressed due to the plasmon’s narrow energy distribution, enabling more stable and predictable plasmonic circuits. This technique provides a versatile tool for designing plasmonic circuits, offering the ability to tailor plasmon speed through local parameters, minimise unwanted plasmon excitation in adjacent circuits, and enable the precise selection of electron-channel plasmon eigenstates in quantum interferometers.
DC.rights	This article is licensed under a Creative Commons Attribution 4.0 International License.
DC.format	103690
citation_title	Eigenstate control of plasmon wavepackets with electron-channel blockade
citation_author	Takada, Shintaro
	Georgiou, Giorgos
	Wang, Junliang
	Okazaki, Yuma
	Nakamura, Shuji
	Pomaranski, David
	Ludwig, Arne
	Wieck, Andreas D.
	Yamamoto, Michihisa
	Bäuerle, Christopher
	Kaneko, Nobu Hisa
citation_publisher	Nature Research
citation_language	英語
citation_date	2025-11-12
citation_journal_title	Nature Communications
citation_volume	16
citation_firstpage	9942
citation_doi	https://doi.org/10.1038/s41467-025-64876-z
citation_public_url	https://hdl.handle.net/11094/103690

Eigenstate control of plasmon wavepackets with electron-channel blockade

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