THE DEFINITIVE GUIDE TO PPKTP CRYSTAL

We have now bought SPDC810 and hoped to work with polarization-entangled photons to start with. But It appears this unit doesn't have polarization-entangled photons. I ponder if you could update/modify our SPDC810 to make it emit entangled photons.Thanks for reaching out to us using this inquiry. Regarding the polarization states, the pair of photo