[La magnonique des quanta : Le magnon rencontre le qubit supraconducteur]
Nous appliquons les techniques de l'optique quantique micro-onde aux excitations collectives des spins d'une sphère macroscopique d'un isolant ferromagnétique. Nous mettons en évidence, dans la limite d'une unique excitation magnonique, le couplage fort entre un mode magnétostatique de la sphère et un mode d'une cavité micro-onde. En outre, nous avons ajouté un bit quantique supraconducteur à la cavité, ce qui permet de coupler ce bit quantique au mode de magnon, via l'échange virtuel d'un photon. Nous observons ainsi un anticroisement des fréquences de résonance du magnon et de la cavité. Cette plateforme hybride permet la création et la caratérisation d'états non classiques de magnons.
The techniques of microwave quantum optics are applied to collective spin excitations in a macroscopic sphere of a ferromagnetic insulator. We demonstrate, in the single-magnon limit, strong coupling between a magnetostatic mode in the sphere and a microwave cavity mode. Moreover, we introduce a superconducting qubit in the cavity and couple the qubit with the magnon excitation via the virtual photon excitation. We observe the magnon–vacuum-induced Rabi splitting. The hybrid quantum system enables generation and characterization of non-classical quantum states of magnons.
Mots-clés : Magnon, Ferromagnétisme, Grenat de fer et d'yttrium, Bits quantiques supraconducteurs, Micro-ondes, Optique quantique
Yutaka Tabuchi 1 ; Seiichiro Ishino 1 ; Atsushi Noguchi 1 ; Toyofumi Ishikawa 1 ; Rekishu Yamazaki 1 ; Koji Usami 1 ; Yasunobu Nakamura 1, 2
@article{CRPHYS_2016__17_7_729_0,
author = {Yutaka Tabuchi and Seiichiro Ishino and Atsushi Noguchi and Toyofumi Ishikawa and Rekishu Yamazaki and Koji Usami and Yasunobu Nakamura},
title = {Quantum magnonics: {The} magnon meets the superconducting qubit},
journal = {Comptes Rendus. Physique},
pages = {729--739},
publisher = {Elsevier},
volume = {17},
number = {7},
year = {2016},
doi = {10.1016/j.crhy.2016.07.009},
language = {en},
}
TY - JOUR AU - Yutaka Tabuchi AU - Seiichiro Ishino AU - Atsushi Noguchi AU - Toyofumi Ishikawa AU - Rekishu Yamazaki AU - Koji Usami AU - Yasunobu Nakamura TI - Quantum magnonics: The magnon meets the superconducting qubit JO - Comptes Rendus. Physique PY - 2016 SP - 729 EP - 739 VL - 17 IS - 7 PB - Elsevier DO - 10.1016/j.crhy.2016.07.009 LA - en ID - CRPHYS_2016__17_7_729_0 ER -
%0 Journal Article %A Yutaka Tabuchi %A Seiichiro Ishino %A Atsushi Noguchi %A Toyofumi Ishikawa %A Rekishu Yamazaki %A Koji Usami %A Yasunobu Nakamura %T Quantum magnonics: The magnon meets the superconducting qubit %J Comptes Rendus. Physique %D 2016 %P 729-739 %V 17 %N 7 %I Elsevier %R 10.1016/j.crhy.2016.07.009 %G en %F CRPHYS_2016__17_7_729_0
Yutaka Tabuchi; Seiichiro Ishino; Atsushi Noguchi; Toyofumi Ishikawa; Rekishu Yamazaki; Koji Usami; Yasunobu Nakamura. Quantum magnonics: The magnon meets the superconducting qubit. Comptes Rendus. Physique, Quantum microwaves / Micro-ondes quantiques, Volume 17 (2016) no. 7, pp. 729-739. doi : 10.1016/j.crhy.2016.07.009. https://comptes-rendus.academie-sciences.fr/physique/articles/10.1016/j.crhy.2016.07.009/
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