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arXiv:2308.06367 · Annalen der Physik

Achieving Strong Magnon Blockade through Magnon Squeezing in a Cavity Magnetomechanical System

Mohamed Amazioug, Denys Dutykh, Berihu Teklu, Muhammad Asjad

Published Dec 12, 2023• 39 citations
arXivHTMLPDF

Abstract

Abstract A scheme that harnesses magnon squeezing under weak pump driving within a cavity magnomechanical system to achieve a robust magnon (photon) blockade is proposed. Through meticulous analytical calculations of optimal parametric gain and detuning values, the objective is to enhance the second‐order correlation function. The findings demonstrate a substantial magnon blockade effect under ideal conditions, accompanied by a simultaneous photon blockade effect. Impressively, both numerical and analytical results are found to be in complete accord, providing robust validation for the consistency of the findings. It is anticipated that the proposed scheme will serve as a pioneering approach toward the practical realization of magnon (photon) blockade in experimental cavity magnomechanical systems.

DOI
10.1002/andp.202300357

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Abstract A scheme that harnesses magnon squeezing under weak pump driving within a cavity magnomechanical system to achieve a robust magnon (photon) blockade is proposed. Through meticulous analytical calculations of optimal parametric gain and detuning values, the objective is to enhance the second‐order correlation function. The findings demonstrate a substantial magnon blockade effect under ideal conditions, accompanied by a simultaneous photon blockade effect. Impressively, both numerical and analytical results are found to be in complete accord, providing robust validation for the consistency of the findings. It is anticipated that the proposed scheme will serve as a pioneering approach toward the practical realization of magnon (photon) blockade in experimental cavity magnomechanical systems.
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Abstract A scheme is proposed to realize strong photon blockade (PB) effect in cavity magnomechanical system by incorporating a magnon parametric amplification (MPA). By analyzing the theoretical model of this system, it is found that the introduction of MPA not only increases additional transition pathways but also facilitates destructive interference between different transition paths, leading to a significantly enhanced unconventional photon blockade (UPB). This research demonstrates that PB is highly sensitive to phase and driving strength, and the optimized parameter relationships provide effective guidance for achieving quantum correlation. Furthermore, these conditions are closely related to the strength of the magnon‐photon coupling, indicating the significant impact of the system's nonlinear characteristics on the photon–photon correlations. This work not only deepens the understanding of quantum interference in hybrid cavity systems but also provides a viable route toward realizing high‐purity single‐photon sources in magnomechanical platforms.
We propose to achieve and enhance the magnon blockade effect in an optomechanical-magnetic system based on a quantum destructive interference mechanism between three indirect transition pathways. By introducing a degenerate parametric amplifier, we analytically obtain the optimal parametric gain and phase for achieving the magnon blockade. Under the optimized parameter conditions, the driving detunings of cavity and magnon modes can be flexibly controlled to achieve the smallest second-order magnon correlation function. Moreover, the magnon blockade can exhibit fascinating features by proper driving detuning and weaker driving strength. Our scheme combines the benefits of destructive interference-induced magnon blockade and energy-level anharmonicity-induced magnon blockade, which results in a reduction of equal-time second-order magnon correlation while simultaneously avoiding time-delay second-order magnon correlation with rapid oscillation. Our work provides an alternative and experimentally feasible platform for manipulating few-magnon states and generating single-magnon sources.
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In this paper, we optimize photon blockade in a cavity magnomechanical system using feedback by introducing optimized values for the phase and magnetic field coupling strength at each drive frequency. It is shown that the computed values significantly reduce the photon second-order correlation function in the dynamic Schrodinger equation. The Radau method, an implicit Runge-Kutta method, has been employed, which provides more accurate results. Furthermore, we demonstrate that a frequency detuning between the magnon and photon can result in deep values of photon blockade. Utilizing these optimized parameters outperforms scenarios that rely on constant, non-optimized values. This approach provides strong potential for applications in quantum sensing and quantum computation.