A team of researchers with members from several institutions in Denmark, Sweden and Japan has developed a means for sending 1.84 petabits of data per second via a fiber-optic cable over 7.9 km. Their report is published in Nature Photonics.A team of researchers with members from several institutions in Denmark, Sweden and Japan has developed a means for sending 1.84 petabits of data per second via a fiber-optic cable over 7.9 km. Their report is published in Nature Photonics.