Quantum squeezed states are crucial for advancing precision measurement and exploring quantum optics, but their generation is constrained by the damage threshold of conventional solid-state media. We propose a new paradigm using fully ionized plasma to overcome this limitation. The method uses plasma waves to mediate four-wave mixing, generating quantum-correlated photon pairs in a two-mode squeezed state. Our model predicts that this method could ideally achieve 40 dB squeezing using ${10}^{16}{\mathrm{Wcm}}^{-2}$ pumps, with remarkable resilience to thermal noise. By circumventing material breakdown, this plasma-based platform enables squeezing at near-kW-level peak power and is scalable to shorter wavelengths, suggesting potential applications in strong-field QED and x-ray quantum optics.

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• Electromagnetic waves & oscillations
• Electrostatic waves & oscillations
• Laser-plasma interactions
• Plasma optics
• Quantum correlations in quantum information
• Quantum information processing
• Quantum metrology