Ultra-strong Quantum Squeezing Mediated by Plasma Waves

• URL: http://arxiv.org/abs/2507.12288v1
• Date: Wed, 16 Jul 2025 14:38:48 GMT
• Title: Ultra-strong Quantum Squeezing Mediated by Plasma Waves
• Authors: Kenan Qu, Nathaniel J. Fisch,
• Abstract summary: We show that plasma waves can mediate ultra-strong two-mode squeezing through stimulated Raman scattering.<n>We generate quantum-correlated photon pairs through phonon-mediated four-wave mixing.<n>The process exhibits remarkable thermal noise tolerance, allowing strong squeezing even with large thermal phonon numbers.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Quantum squeezed states enable precision measurements beyond the standard quantum limit, but conventional solid-state media fundamentally limit pump intensities to the ionization threshold. We demonstrate that plasma waves can mediate ultra-strong two-mode squeezing through stimulated Raman scattering, achieving up to ultrastrong squeezing using $10^{16}{Wcm^{-2}}$ pump lasers. Employing two copropagating pump beams with frequency difference matching twice the plasma frequency, we generate quantum-correlated photon pairs through phonon-mediated four-wave mixing. The process exhibits remarkable thermal noise tolerance, allowing strong squeezing even with large thermal phonon numbers. This plasma-based approach produces squeezed states with ultrahigh photon numbers, opening new possibilities for strong-field applications across optical to X-ray wavelengths.

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