University of Science and Technology of China

Huawei Technologies Co., Limited

Osram Ag

Shangbin Li

Rui Ni

Chen Gong

Boyang Huang

Jinkang Zhu

Zhengyuan Xu

Changsong Ma

A quantum communication method, an apparatus, and a system are provided. The method includes: modulating a first symbol to an idirection vector of a first electric wave based on a preset mapping relationship, to obtain a second electric wave; and transmitting the second electric wave, where the first electric wave supports M direction vectors, the idirection vector of the first electric wave is one of the M direction vectors of the first electric wave, the first symbol is a symbol corresponding to first data, the idirection vector of the first electric wave corresponds to an idistribution result, the idistribution result is obtained by converting the second electric wave into an energy quantum. The first symbol may be modulated to a direction vector of the first electric wave, and this application is compatible with the conventional technology.

Quantum communication method, apparatus, and system

Provided is a visible light communication transceiver. A drive amplification module performs digital-to-analog conversion and amplification on a digital modulation signal to obtain a first electrical signal, and transmits the signal to a Bias Tee-like circuit. The Bias Tee-like circuit transmits the first electrical signal to a LED light source. The LED light source performs electrical-to-optical conversion on the first electrical signal to generate a first optical signal and transmits the first optical signal, and performs optical-to-electrical conversion on a received second optical signal to obtain a second electrical signal. The Bias Tee-like circuit obtains the second electrical signal from the LED light source, and transmits the second electrical signal to an adaptive amplification and equalization module. The adaptive equalization module adjusts a gain of the second electrical signal based on an optical power of the first optical signal.

Visible light communication transceiver and visible light communication system

Growing community of inventors

Hefei, China

Shangbin Li