标题： 通过等离子体波实现的超强量子压缩 显示英文标题

标题： Ultra-strong Quantum Squeezing Mediated by Plasma Waves

摘要： 量子压缩态使超越标准量子极限的精密测量成为可能，但传统的固态介质从根本上限制了泵浦强度至电离阈值。 我们证明等离子体波可以通过受激拉曼散射介导超强双模压缩，利用$10^{16}{Wcm^{-2}}$泵浦激光实现了高达超强压缩。 采用频率差匹配两倍等离子体频率的共向泵浦光束，我们通过声子介导的四波混频生成量子关联光子对。 该过程表现出显著的热噪声容忍度，即使在大量热声子数的情况下也能实现强压缩。 这种基于等离子体的方法产生了具有超高空间光子数的压缩态，为光学到X射线波长范围内的强场应用开辟了新可能性。 显示英文摘要

摘要： 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.