Generation of continuous-wave broadband Einstein-Podolsky-Rosen beams   using periodically-poled lithium niobate waveguides
  Continuous-wave light beams with broadband Einstein-Podolsky-Rosen correlation (Einstein-Podolsky-Rosen beams) are created with two independent squeezed vacua generated by two periodically-poled lithium niobate waveguides and a half beam splitter. 
Ken-ichiroh Yoshino, Takao Aoki, Akira Furusawa