Quantum magnonics: When magnon spintronics meets quantum information science

Yuan, H. Y.; Cao, Yong; Kamra, Akashdeep; Duine, R. A.; Peng, Yan

doi:10.1016/j.physrep.2022.03.002

Cited by 293 publications

(144 citation statements)

References 474 publications

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“…[ 43–45 ] Also, the formation of flat spin‐wave bands at small twist angles, potentially connected with localized magnons, together with the high electrical tunability of the noncollinear magnetic structures, may open new paths for the application of these materials in novel quantum information technologies. [ 46,47 ]…”

Section: Summary and Prospectmentioning

confidence: 99%

Domain Wall Formation and Magnon Localization in Twisted Chromium Trihalides

Soriano

2022

Physica Rapid Research Ltrs

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The rise of twistronics revolutionizes the field of condensed matter physics, and more specifically the future applications of 2D materials. At small twist angles, the microscopic world becomes strongly correlated, and unexpected physical phenomena such as superconductivity emerge. For magnetic layers, stacking plays a crucial role in the magnetic exchange coupling between the layers leading to nontrivial spin configurations and flat spin‐wave dispersion when twisted. Herein, a short overview of the most recent theoretical and experimental works reporting the effect of twist angles on 2D magnets is given. In addition, the effect of the twist angle and the local antiferromagnetic interlayer exchange coupling on the formation of antiferromagnetic domains in chromium trihalides is discussed. Finally, some preliminary results on the effect of the stacking and the twist angle on the spin‐wave dispersion of bilayer CrI3 are shown.

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Section: Summary and Prospectmentioning

confidence: 99%

Domain Wall Formation and Magnon Localization in Twisted Chromium Trihalides

Soriano

2022

Physica Rapid Research Ltrs

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“…It is worth noting that the last term in the total Hamiltonian is the squeezing of the magnon mode, with the squeezing parameter χ and the phase θ [34]. So far, there are several methods to achieve the magnon squeezing [35][36][37].…”

Section: Theoretical Model and Dynamical Equationmentioning

confidence: 99%

Magnon squeezing enhanced entanglement in a cavity magnomechanical system

Ding,

Shi,

Liu

et al. 2022

Preprint

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We investigate the generation of the entanglement in a cavity magnomechanical system, which consists of three modes: a magnon mode, a microwave cavity mode and a mechanical vibration mode, the couplings of the magnon-photon and the magnon-phonon are achieved by the magnetic dipole interaction and the magnetostrictive interaction, respectively. By introducing a squeezing of the magnon mode, the magnon-photon and the magnon-phonon entanglements are significantly enhanced compared with the case without inserting the magnon squeezing. We find that an optimal parameter of the squeezing exists, which yields the maximum entanglement. This study provides a new idea for exploring the properties of quantum entanglement in the the cavity magnomechanical systems, and may have some potential applications in the quantum state engineering.

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“…In the experiment, the typical frequencies for the transmon qubit, the resonator and the magnon mode can be made as 1 − 10 GHz [3,37]. In the numerical simulations, we set ω σ /2π = ω a /2π = ω b /2π = ω d /2π = 5 GHz, which can be easily reached, because the frequencies of the transmon qubit and the magnon mode are readily tunable by controlling the bias magnetic fields.…”

Section: Generating Long-lived W Statesmentioning

confidence: 99%

“…Magnons are collective spin excitations in ferromagnetic crystals [36]. The magnon-based hybrid systems have recently become a promising platform for novel quantum technologies [37]. Recently, there are some investigations on quantum entanglement in magnon-based hybrid systems [38][39][40][41].…”

Section: Introductionmentioning

confidence: 99%

Generation of long-lived $W$ states via reservoir engineering in dissipatively coupled systems

Zhang¹,

Feng²,

Xiong³

et al. 2022

Preprint

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Very recently, the dissipative coupling was discovered, which develops and broadens methods for controlling and utilizing light-matter interactions. Here, we propose a scheme to generate the tripartite W state in a dissipatively coupled system, where one qubit and two resonators simultaneously interact with a common reservoir. With appropriate parameters, we find the W state is a dark state of the system. By driving the qubit, the dissipatively coupled system will evolve from the ground state to the tripartite W state. Because the initial state is the ground state of the system and no measurement is required, our scheme is easy to implement in experiments. Moreover, the W state decouples from the common reservoir and thus has a very long lifetime. This scheme is applicable to a wide class of dissipatively coupled systems, and we specifically illustrate how to prepare the W state in a hybrid qubit-photon-magnon system by using this scheme.

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Quantum magnonics: When magnon spintronics meets quantum information science

Cited by 293 publications

References 474 publications

Domain Wall Formation and Magnon Localization in Twisted Chromium Trihalides

Domain Wall Formation and Magnon Localization in Twisted Chromium Trihalides

Magnon squeezing enhanced entanglement in a cavity magnomechanical system

Generation of long-lived $W$ states via reservoir engineering in dissipatively coupled systems

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