Experimental demonstration of continuous-variable entanglement of phase-locked bright beams
Jietai Jing, Sheng Feng, Russell Bloomer, Olivier Pfister · Frontiers in Optics · 2006
We observed continuous-variable entanglement between two bright beams emitted above threshold by a phase-difference-locked ultrastable optical parametric oscillator. The squeezing about HWHM is –3 dB for amplitude-difference and –1.35 dB for phase-sum.