Controlling Stationary One-Way Quantum Steering in Cavity Magnonics

Yang, Zhi‐Bo; Liu, Xuan-De; Yin, Xin‐Yi; Ying, Mingsheng; Liu, Hongyu; Yang, Rong‐Can

doi:10.1103/physrevapplied.15.024042

Cited by 53 publications

(13 citation statements)

References 88 publications

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“…Recently, the proposal of optomagnonic Bell test is also presented [46]. Apart from to the studies mentioned above, considerable attention has been devoted to the generation of quantum steering [47][48][49][50][51], which is intrinsically distinct from quantum entanglement and Bell nonlocality for its asymmetric characteristics between the parties involved.…”

Section: Introductionmentioning

confidence: 99%

“…Light-mechanical quantum steering [52][53][54] or steering between two massive mechanical oscillators [55][56][57] have been widely studied in cavity optomechanical systems, suggesting that photon-phonon or phonon-phonon one-way quantum steering can be achieved in such systems [54,56,57]. Primary researches also indicate that asymmetric steering between two magnons [47,49] can be obtained in cavity magnonics and asymmet-ric steering between a macroscopic mechanical oscillator and a magnon mode [50] can be obtained in a microwave-mediated phonon-magnon interface. Nevertheless, whether asymmetric steering can be directly obtained in cavity magnomechanical system is still almost in blank.…”

Section: Introductionmentioning

confidence: 99%

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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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Section: Introductionmentioning

confidence: 99%

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

View full text Add to dashboard Cite

show abstract

“…Moreover, magnons can also interact with visible/nearinfrared light waves (via magneto-optical effect [12][13][14][15][16]), superconducting qubits (indirectly [17][18][19]), and mechanical deformation modes (directly [20][21][22][23]) to form various hybrid systems. Experimental and theoretical studies based on cavity magnonics reveal a variety of phenomena, including magnon dark modes [24], magnon Kerr effect [25,26], non-Hermitian physics [27][28][29][30][31][32], magnon-induced transparency [33], and nonclassical states [21][22][23][34][35][36][37][38][39][40][41][42].…”

Section: Introductionmentioning

confidence: 99%

Steady entangled-state generation via cross-Kerr effect in a ferrimagnetic crystal

Yang,

Wu,

et al. 2022

Preprint

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For solid-state spin systems, the collective spin motion in a single crystal embodies multiple magnetostatic modes. Recently, it was found that the cross-Kerr interaction between the higher-order magnetostatic mode and the Kittel mode introduces a new operable degree of freedom. In this work, we propose a scheme to entangle two magnon modes via the cross-Kerr nonlinearity when the bias field is inhomogeneous and the system is driven. Quantum entanglement persists at the steady state, as demonstrated by numerical results using experimentally feasible parameters. Furthermore, we also demonstrate that entangled states can survive better in the system where self-Kerr and cross-Kerr nonlinearities coexist. Our work provides insights and guidance for designing experiments to observe entanglement between different degrees of freedom within a single ferrimagnetic crystal. Additionally, it may stimulate potential applications in quantum information processing using spintronic devices.

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“…Among various quantum interfaces including superconducting circuits [9,10], phonons [11][12][13][14][15][16][17][18][19][20], critical polaritons [21,22], sqeezed photons [23,24] and optomechanics [25][26][27], the emerged magnons [28][29][30][31][32] (i.e., the energy quanta of spin waves) in magnetical materials have played an essential role in quantum physics [33][34][35][36][37][38][39][40][41][42][43][44][45], with different types of magnets such as sphere magnets [46][47][48][49] and film layer magnets [50][51][52][53]. Due to the small mode volume and high spin density of the Kittel mode in a yttrium-iron-garnet (YIG) sphere magnet, magnons can be strongly coupled to other quantum systems [54]…”

Section: Introductionmentioning

confidence: 99%

Strong Long-Range Spin-Spin Coupling via a Kerr Magnon Interface

Xiong,

Tian,

Zhang

et al. 2021

Preprint

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Strong long-range coupling between distant spin qubits is crucial for solid-state quantum information processing. However, achieving such a strong spin-spin coupling remains a well-known challenge. To this end, we propose an efficient method to realize a strong coupling between two distant spins via the Kerr effect of the magnons in a yttrium-iron-garnet sphere. By applying a strong microwave field on the magnon, the Kerr effect of the magnon is converted to its squeezing effect charaterized by the squeezing parameter. Thus, the coupling betweem the spins and the squeezed-magnon can be exponentially enhanced, which in turn allows the spin-magnon distance greatly improved from nanometer to micrometer. By considering the virtual excitation of the squeezd-magnon in the dispersive regime, strong spin-spin coupling mediated by the squeezed-magnon can be achieved. As applications, remote quantum state transfer, nonlocal two-qubit iSWAP gate with high fidelity and remote quantum charger-battery device are investigated. Our proposal provides a potential platform to perform distant quantum information tasks and build the thermodynamic device with weakly coupled spin-magnon systems.

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Controlling Stationary One-Way Quantum Steering in Cavity Magnonics

Cited by 53 publications

References 88 publications

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

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

Steady entangled-state generation via cross-Kerr effect in a ferrimagnetic crystal

Strong Long-Range Spin-Spin Coupling via a Kerr Magnon Interface

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