Nonclassical intensity correlation from a type I phase-matched optical parametric oscillator.
Signal and idler beams from a type I phase-matched nondegenerate optical parametric oscillator are separated by a Mach-Zehnder interferometer. Broadband nonclassical intensity correlation is observed, in agreement with a theory that includes pump noise. The maximum observed correlation, which occurs at 1.1 MHz, yields a noise level 2.8 dB below the shot noise.
Leong
K W
KW
Wong
N C
NC
Shapiro
J H
JH