Optical communication with novel quantum devices

Sven Rodt, Philipp‐Immanuel Schneider, Lin Zschiedrich +7 more

Ashkan Safari, Hamed Kharrati

Proposed paper presents a novel hybrid subject in optical wireless communications (OWC) in contribution to IoT devices of smart grids within smart sustainable cities (SSC). OWC and IoT are among the noticeably developing fields being used in smart cities, e-commerce, and even e-health. Accordingly, their constructions are entirely investigated. Also, the Metaverse virtual world, its infrastructures, and applications are expressed to clarify the OWC, IoT applications, and perspectives inherited with this virtual world. Moreover, the important factor in IoT devices, SSCs, and the Metaverse is ultra-secure communication. To cover this subject, quantum technology, quantum cryptography, as well as, quantum key distribution (QKD), and quantum IoT (IoT) for much more secure communication between IoT devices are represented. As another methodology, quantum neural networks (QNN), and their application in secure communication of IoT, and OWC systems are explained. Finally, quantum-based systems were compared with other regular methods and concluded quantum technology-based systems can have the potential to be implemented with optical wireless communications (OWC), IoT devices, and artificial intelligence (AI) to increase the security, and efficiency of communications in IoT constructions of smart sustainable cities (SSCs) elements.

Daniel F. Walls, Gerard J Milburn

Gong Zhang, Ignatius William Primaatmaja, Jing Yan Haw +3 more

We propose and experimentally demonstrate a passive optical power limiter device used to protect practical quantum communication systems. The device is robust against different signal variations and has minimum impact on the quantum signals.

Konrad Banaszek

Da i Far, Shixiao Le, Song Ruhua

A novel technique of digital laser space communication, in which a device of CO2 optical bistability is utilized as the optical switch, is presented. In this paper, the theory of optical bistability (03) in 10.6um with the Fabry-Perot (F-P) interferometer device and intracavity electrooptic modulation (IEM) device are introduced. Corresponding experimental results, which show the consistency with the theoritical analyses, are observed. Choosing the scanning F-P interferometer device and IEM device as our experimental components for CO2 laser digital communication, the elementary experiments of this technique in 10.6um laser communication link are achieved.