Their noiseless transmission system uses three light frequencies, with the receiver generating two of them, leaving the transmitter responsible for only one. This simplified system demonstrated ...
In the new communication system from researchers at Chalmers University of Technology, in Sweden, a weak optical signal (red) from the spacecraft’s transmitter can be amplified noise-free when it ...
Optics and photonics covers the entire electromagnetic spectrum from high-energy gamma rays and X-rays, through the optical regime of ultraviolet, visible, and infrared light, to long-wavelength ...