Remote magnon entanglement between two massive ferrimagnetic spheres via cavity optomagnonics

Wu, Wei-Jiang; Wang, Yi-Pu; Wu, Jin-Ze; Li, Jie; You, J. Q.

doi:10.48550/arxiv.2103.10595

Cited by 2 publications

(3 citation statements)

References 45 publications

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“…Owing to the selection rule [52][53][54][55] imposed by the conservation of the angular momenta of WGM photons and magnons, the BLS shows a pronounced asymmetry in the Stokes and anti-Stokes scattering strengths. This asymmetry is the basis for realizing the proposals for preparing macroscopic quantum states of magnons in optomagnonics [56][57][58][59][60][61].…”

Section: A Magnon-induced Brillouin Light Scattering In Optomagnonicsmentioning

confidence: 99%

“…Note that the selection rule also causes different optical polarizations of the two WGMs. Without loss of generality, we assume a 2 (a 1 ) mode to be the transverse-magnetic (TM) (transverse-electric (TE)) mode of a certain WGM orbit, and ω 2(TM) > ω 1(TE) due to the geometrical birefringence of the WGM resonator [11,60].…”

Section: A Magnon-induced Brillouin Light Scattering In Optomagnonicsmentioning

confidence: 99%

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Quantum network with magnonic and mechanical nodes

Wang

et al. 2021

Preprint

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A quantum network consisting of magnonic and mechanical nodes connected by light is proposed. Recent years have witnessed a significant development in cavity magnonics based on collective spin excitations in ferrimagnetic crystals, such as yttrium iron garnet (YIG). Magnonic systems are considered to be a promising building block for a future quantum network. However, a major limitation of the system is that the coherence time of the magnon excitations is limited by their intrinsic loss (typically in the order of 1 µs for YIG). Here, we show that by coupling the magnonic system to a mechanical system using optical pulses, an arbitrary magnonic state (either classical or quantum) can be transferred to and stored in a distant long-lived mechanical resonator. The fidelity depends on the pulse parameters and the transmission loss. We further show that the magnonic and mechanical nodes can be prepared in a macroscopic entangled state. These demonstrate the quantum state transfer and entanglement distribution in such a novel quantum network of magnonic and mechanical nodes.Our work shows the possibility to connect two separate fields of optomagnonics and optomechanics, and to build a long-distance quantum network based on magnonic and mechanical systems.

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Section: A Magnon-induced Brillouin Light Scattering In Optomagnonicsmentioning

confidence: 99%

Section: A Magnon-induced Brillouin Light Scattering In Optomagnonicsmentioning

confidence: 99%

Quantum network with magnonic and mechanical nodes

Wang

et al. 2021

Preprint

Self Cite

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“…Another attraction of cavity magnomechanical system is that it enables the exhibition of macroscopic quantum effects from the fundamental perspective. Therefore, a wide range of interests have been engaged to the generation of different types of macroscopic nonclassical states, including genuine tripartite [16] or bipartite entanglement between subsystems [32][33][34][35][36][37][38][39][40][41][42], squeezing of magnon and phonon [43,44], magnon Fock states [45], among others.…”

Section: Introductionmentioning

confidence: 99%

Dissipative generation of significant amount of photon-phonon asymmetric steering in magnomechanical interfaces

Tian-Ang¹,

Zheng²,

Wang³

et al. 2022

Preprint

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We propose an effective approach for generating significant amount of entanglement and asymmetric steering between photon and phonon in a cavity magnomechanical system which consists of a microwave cavity and a yttrium iron garnet sphere. By driving the magnon mode of the yttrium iron garnet sphere with blue-detuned microwave field, the magnon mode can be acted as an engineered resevoir cools the Bogoliubov modes of microwave cavity mode and mechanical mode via beam-splitter-like interaction. In this way, the microwave cavity mode and mechanical mode are driven to two-mode squeezed states in the stationary limit. In particular, strong two-way and oneway asymmetric quantum steering between the photon and phonon modes can be obtained with even equal dissipation. It is very different from the conventional proposal of asymmetric quantum steering, where additional unbalanced losses or noises on the two subsystems has been imposed.Our finding may be significant to expand our understanding of the essential physics of asymmetric steering and extend the potential application of the cavity spintronics to device-independent quantum key distribution.

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Remote magnon entanglement between two massive ferrimagnetic spheres via cavity optomagnonics

Cited by 2 publications

References 45 publications

Quantum network with magnonic and mechanical nodes

Quantum network with magnonic and mechanical nodes

Dissipative generation of significant amount of photon-phonon asymmetric steering in magnomechanical interfaces

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