Transmission of information via photonic link Introduction With the rise of civilization, they noticed the sun as they received the light they sent. Because this light caused the appeal of light. Eventually, human thought and technology has evolved into the experiment of using light in photocells by Alexander Graham, a sound emitter using the sun as a transmitter. However, unlike Graham's experiment, the latest technology provides a new level of communication in this experiment.
The term photonics is used in describing the operation of many optical devices and through the physical sciences of emission, transmission, modulation, signal processing, switching, amplification, generation (detection of photons) of light (photons), detection and manipulation, It reflects the importance of the property. Detection / detection. Although optics may be confused as it is often mentioned in terms of photonics, in reality photonics is a broader term and includes optics. Both photonics and optics fundamentally "manipulate" light. However, photonics also involves the generation and detection of light, so we will go one step further. In optics, light is considered to be particles or waves. In photonics, they integrate the concept of quantum. In other words, photons (photons) have characteristics characterizing waves and particles. These two aspects are essential for complete interpretation and analysis of light behavior, so we need to consider these two aspects in detail.
Quantum communication is a technique for transmitting information encoded into a quantum state. The standard element of quantum communication is photons. Photons are the basic unit of light. Photons can be easily generated, controlled, and manipulated using commercially available laboratory equipment. Furthermore, the interaction between photons and the surrounding environment is very weak. This means that they can travel long distances before they lose their quantum information, which is an ideal condition for future global quantum networks. The quantum states of two (or more) photons can be intertwined. Compared to birthday quantum gifts, this means that they share more than the classical relevance shown after they observe that state. Go back to our birthday twins, call Alice and Bob - the protagonists of all the standard encryption stories