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Nonlinear two-level dynamics of quantum time crystals

Research output: Contribution to Journal/Magazine › Journal article › peer-review

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Nonlinear two-level dynamics of quantum time crystals. / Autti, Samuli; Heikkinen, Petri; Nissinen, Jaakko et al.
In: Nature Communications, Vol. 13, 3090, 02.06.2022.

Research output: Contribution to Journal/Magazine › Journal article › peer-review

Harvard

Autti, S, Heikkinen, P, Nissinen, J, Mäkinen, J, Volovik, G, Zavyalov, V & Eltsov, V 2022, 'Nonlinear two-level dynamics of quantum time crystals', Nature Communications, vol. 13, 3090. https://doi.org/10.1038/s41467-022-30783-w

APA

Autti, S., Heikkinen, P., Nissinen, J., Mäkinen, J., Volovik, G., Zavyalov, V., & Eltsov, V. (2022). Nonlinear two-level dynamics of quantum time crystals. Nature Communications, 13, Article 3090. https://doi.org/10.1038/s41467-022-30783-w

Vancouver

Autti S, Heikkinen P, Nissinen J, Mäkinen J, Volovik G, Zavyalov V et al. Nonlinear two-level dynamics of quantum time crystals. Nature Communications. 2022 Jun 2;13:3090. doi: 10.1038/s41467-022-30783-w

Author

Autti, Samuli ; Heikkinen, Petri ; Nissinen, Jaakko et al. / Nonlinear two-level dynamics of quantum time crystals. In: Nature Communications. 2022 ; Vol. 13.

Bibtex

@article{e1dd95c318ce4277be54e8442bc97b5f,
title = "Nonlinear two-level dynamics of quantum time crystals",
abstract = "A time crystal is a macroscopic quantum system in periodic motion in its ground state. In our experiments, two coupled time crystals consisting of spin-wave quasiparticles (magnons) form a macroscopic two-level system. The two levels evolve in time as determined intrinsically by a nonlinear feedback, allowing us to construct spontaneous two-level dynamics. In the course of a level crossing, magnons move from the ground level to the excited level driven by the Landau-Zener effect, combined with Rabi population oscillations. We demonstrate that magnon time crystals allow access to every aspect and detail of quantum-coherent interactions in a single run of the experiment. Our work opens an outlook for the detection of surface-bound Majorana fermions in the underlying superfluid system, and invites technological exploitation of coherent magnon phenomena – potentially even at room temperature.",
author = "Samuli Autti and Petri Heikkinen and Jaakko Nissinen and Jere M{\"a}kinen and Grigori Volovik and Vladislav Zavyalov and Vladimir Eltsov",
year = "2022",
month = jun,
day = "2",
doi = "10.1038/s41467-022-30783-w",
language = "English",
volume = "13",
journal = "Nature Communications",
issn = "2041-1723",
publisher = "Nature Publishing Group",

}

RIS

TY - JOUR

T1 - Nonlinear two-level dynamics of quantum time crystals

AU - Autti, Samuli

AU - Heikkinen, Petri

AU - Nissinen, Jaakko

AU - Mäkinen, Jere

AU - Volovik, Grigori

AU - Zavyalov, Vladislav

AU - Eltsov, Vladimir

PY - 2022/6/2

Y1 - 2022/6/2

N2 - A time crystal is a macroscopic quantum system in periodic motion in its ground state. In our experiments, two coupled time crystals consisting of spin-wave quasiparticles (magnons) form a macroscopic two-level system. The two levels evolve in time as determined intrinsically by a nonlinear feedback, allowing us to construct spontaneous two-level dynamics. In the course of a level crossing, magnons move from the ground level to the excited level driven by the Landau-Zener effect, combined with Rabi population oscillations. We demonstrate that magnon time crystals allow access to every aspect and detail of quantum-coherent interactions in a single run of the experiment. Our work opens an outlook for the detection of surface-bound Majorana fermions in the underlying superfluid system, and invites technological exploitation of coherent magnon phenomena – potentially even at room temperature.

AB - A time crystal is a macroscopic quantum system in periodic motion in its ground state. In our experiments, two coupled time crystals consisting of spin-wave quasiparticles (magnons) form a macroscopic two-level system. The two levels evolve in time as determined intrinsically by a nonlinear feedback, allowing us to construct spontaneous two-level dynamics. In the course of a level crossing, magnons move from the ground level to the excited level driven by the Landau-Zener effect, combined with Rabi population oscillations. We demonstrate that magnon time crystals allow access to every aspect and detail of quantum-coherent interactions in a single run of the experiment. Our work opens an outlook for the detection of surface-bound Majorana fermions in the underlying superfluid system, and invites technological exploitation of coherent magnon phenomena – potentially even at room temperature.

U2 - 10.1038/s41467-022-30783-w

DO - 10.1038/s41467-022-30783-w

M3 - Journal article

VL - 13

JO - Nature Communications

JF - Nature Communications

SN - 2041-1723

M1 - 3090

ER -