Efficient enhancement of quantum effects is inherently constrained by the core trade-off between coherence improvement and noise suppression, a dilemma particularly acute in entanglement manipulation. Herein, we construct a structurally symmetric cavity magnonic system, which enables the synergistic enhancement of entanglement and directional control of quantum steering, presenting a potential pathway for addressing this challenge. By applying parametric pumping, the nonlinear intermode interactions in the single-squeezed representation are significantly strengthened, triggering a substantial surge in entanglement. Nevertheless, this enhanced squeezing inevitably induces noise amplification. To counteract this, an additional broadband squeezed-vacuum field is introduced to induce destructive interference between the two noise fields. Our theoretical analysis indicates that when the phases of the two noise fields satisfy an optimal matching condition, the amplified noise is effectively suppressed while stronger entanglement is maintained over a broader parameter range. This “coupling-enhancement and noise-cancellation” synergy may help improve the stability of quantum manipulation. Under this noise-canceling mechanism, we further realize precise control over the directionality of quantum steering, supported by mode population analysis. The proposed “squeezing enhancement integrated with noise cancellation” strategy exhibits broad adaptability and could be extended to diverse quantum systems. This work may offer a viable pathway for advancing one-way quantum computing and entanglement-based quantum communications.

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• Magnons
• Quantum control
• Quantum correlations, foundations & formalism