Vector photon-magnon-phonon coherence in a polarized microwave driven cavity magnomechanical system

Peng, Jia-Xin; Kundu, Akash; Liu, Zeng-Xing; Rahman, Atta ur; Akhtar, Naeem; Asjad, M.

doi:10.1103/physrevb.109.064412

Phys. Rev. B

2024

DOI: 10.1103/physrevb.109.064412

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Vector photon-magnon-phonon coherence in a polarized microwave driven cavity magnomechanical system

Jia-Xin Peng,

Akash Kundu,

Zeng-Xing Liu

et al.

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2024

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Cited by 5 publications

References 121 publications

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Entanglement and quantum coherence of two YIG spheres in a hybrid Laguerre–Gaussian cavity optomechanics

Hidki,

Peng,

Singh

et al. 2024

Sci Rep

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We theoretically investigate continuous variable entanglement and macroscopic quantum coherence in the hybrid L–G rotational cavity optomechanical system containing two YIG spheres. In this system, a single L–G cavity mode and both magnon modes (which are due to the collective excitation of spins in two YIG spheres) are coupled through the magnetic dipole interaction whereas the L–G cavity mode can also exchange orbital angular momentum (OAM) with the rotating mirror (RM). We study in detail the effects of various physical parameters like cavity and both magnon detunings, environment temperature, optorotational and magnon coupling strengths on the bipartite entanglement and the macroscopic quantum coherence as well. We also explore parameter regimes to achieve maximum values for both of these quantum correlations. We also observed that the parameters regime for achieving maximum bipartite entanglement is completely different from macroscopic quantum coherence. So, our present study shall provide a method to control various nonclassical quantum correlations of macroscopic objects in the hybrid L–G rotational cavity optomechanical system and have potential applications in quantum sensing, quantum meteorology, and quantum information science.

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Entanglement and quantum coherence of two YIG spheres in a hybrid Laguerre–Gaussian cavity optomechanics

Hidki,

Peng,

Singh

et al. 2024

Sci Rep

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Bistability-assisted mechanical squeezing and entanglement

Agasti,

Djorwé

2024

Phys. Scr.

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Based on a scheme proposed to experience the dynamical Casimir effect in optomechanical systems, we show how to squeeze mechanical motion and entangle the optical field with mechanicalmotion in an optomechanical system containing a parametric amplification. The scheme is basedon optical bistability which emerges in the system for a strong enough driving field. By consideringthe steady state’s lower branch of the bistability, the system shows weak entanglement and almostno mechanical squeezing. When the steady state is on the upper branch of the bistable shape,both squeezing and entanglement are greatly enhanced. Specifically, the entanglement shows threedegrees of magnitude enhancement. However, this giant entanglement is fragile against decoherenceand thermal fluctuation. Regarding the mechanical squeezing, it reaches the standard quantumlimit (SQL) in the upper branch of the bistability. Our proposal provides a way to improve quantum effects in optomechanical systems by taking advantage of nonlinearities. This scheme can berealized in similar systems such as superconducting microwave, and hybrid optomechanical systems.

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Robust generation of a magnonic cat state via a superconducting flux qubit

Hou,

Hei,

Pan

et al. 2024

Phys. Rev. A

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Vector photon-magnon-phonon coherence in a polarized microwave driven cavity magnomechanical system

Cited by 5 publications

References 121 publications

Entanglement and quantum coherence of two YIG spheres in a hybrid Laguerre–Gaussian cavity optomechanics

Entanglement and quantum coherence of two YIG spheres in a hybrid Laguerre–Gaussian cavity optomechanics

Bistability-assisted mechanical squeezing and entanglement

Robust generation of a magnonic cat state via a superconducting flux qubit

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