Nonreciprocal photon-phonon entanglement in Kerr-modified spinning cavity magnomechanics

Chen, Jiaojiao; Fan, Xiao-Gang; Xiong, Wei; Wang, Dong; Ye, Liu

doi:10.1103/physreva.109.043512

Phys. Rev. A

2024

DOI: 10.1103/physreva.109.043512

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Nonreciprocal photon-phonon entanglement in Kerr-modified spinning cavity magnomechanics

Jiaojiao Chen,

Xiao-Gang Fan,

Wei Xiong

et al.

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2024

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Cited by 3 publications

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Nonreciprocal Unconventional Photon Blockade with Kerr Magnons

Fan,

Zhang,

et al. 2024

Adv Quantum Tech

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Nonreciprocal devices, allowing to manipulate one‐way signals, are crucial to quantum information processing and quantum networks. Here a nonlinear cavity‐magnon system is proposed, consisting of a microwave cavity coupled to one or two yttrium–iron–garnet (YIG) spheres supporting magnons with Kerr nonlinearity, to investigate nonreciprocal unconventional photon blockade. The nonreciprocity originates from the direction‐dependent Kerr effect, distinctly different from previous proposals with spinning cavities and dissipative couplings. For a single sphere case, nonreciprocal unconventional photon blockade can be realized by manipulating the nonreciprocal destructive interference between two active paths, via varying the Kerr coefficient from positive to negative, or vice versa. By optimizing the system parameters, the perfect and well‐tuned nonreciprocal unconventional photon blockade can be predicted. For the case of two spheres with opposite Kerr effects, only reciprocal unconventional photon blockade can be observed when two cavity‐magnon coupling strengths Kerr strengths are symmetric. However, when coupling strengths or Kerr strengths become asymmetric, nonreciprocal unconventional photon blockade appears. This implies that two‐sphere nonlinear cavity‐magnon systems can be used to switch the transition between reciprocal and nonreciprocal unconventional photon blockades. This study offers a potential platform for investigating the nonreciprocal photon blockade effect in nonlinear cavity magnonics.

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Nonreciprocal Unconventional Photon Blockade with Kerr Magnons

Fan,

Zhang,

et al. 2024

Adv Quantum Tech

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Enhancement of Nonreciprocal Entanglement and Transmission via Phase‐Dependent Unidirectional Coupling

Wang,

Dong,

et al. 2024

Adv Quantum Tech

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The nonreciprocal property of quantum systems is crucial for chiral quantum networks. In this study, a phase‐controlled scheme is proposed to enhance the nonreciprocal quantum entanglement and optical transmission in a cavity optomechanical system by introducing a phase‐dependent unidirectional coupling between two whispering‐gallery‐mode (WGM) resonators. The Sagnac effect induced by the spinning resonator generates nonreciprocity, while the interference effect between direct evanescent coupling and indirect phase‐dependent unidirectional coupling significantly enhances entanglement under the anti‐Stokes sideband. For specific coupling phases, ideal nonreciprocity can be achieved in both entanglement and transmission. The proposed phase‐controlled nonreciprocity presented offers an effective strategy for constructing a unidirectional quantum channel and implementing an optical diode in chiral quantum networks, thereby opening up new possibilities for applications in quantum technologies.

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Microwave frequency combs through the rotational enhanced magnetostrictive effect

Wu,

Sun,

Chen

et al. 2024

Phys. Rev. A

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Nonreciprocal photon-phonon entanglement in Kerr-modified spinning cavity magnomechanics

Cited by 3 publications

References 82 publications

Nonreciprocal Unconventional Photon Blockade with Kerr Magnons

Nonreciprocal Unconventional Photon Blockade with Kerr Magnons

Enhancement of Nonreciprocal Entanglement and Transmission via Phase‐Dependent Unidirectional Coupling

Microwave frequency combs through the rotational enhanced magnetostrictive effect

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