Minimum-uncertainty state with one quadrature variance below the vacuum value (Δx)² < ½, the conjugate quadrature correspondingly enlarged. Produced by parametric processes; enables sub-shot-noise interferometry (LIGO uses ~6 dB squeezing).
Minimum-uncertainty state with one quadrature variance below the vacuum value (Δx)² < ½, the conjugate quadrature correspondingly enlarged. Produced by parametric processes; enables sub-shot-noise interferometry (LIGO uses ~6 dB squeezing).