To bet on the National Shield of HKUST is to bet on the future of quantum communication

Hong Kong stock decoding, the original trump card column of the Hong Kong Caihua News Agency, and financial experts gathered. Remember to subscribe, comment, and like after reading.

Where is the magic of high-tech stocks? In addition to the relatively high industry prosperity of some industries (such as software), there is another reason: technical barriers.

The reason is very simple. If there is a business in the world that only you have the ability to do, or you are only allowed to do this, then it can be said that the trader of this business is holding hands. The best business model.

Obviously, every company is striving to become the industry's exclusive solution provider. Whether HKUST National Shield has such capabilities and ambitions in its field will be further analyzed.

The business of the National Shield of HKUST is the production of quantum secure communication products, aiming to provide software and hardware products for the construction system of various optical fiber quantum secure communication networks and satellite-ground integrated wide-area quantum secure communication ground stations.

Various types of optical fiber quantum secure communication networks involve backbone networks, metropolitan area networks and local area networks. Among them, the backbone network can realize cross-province and cross-city connections (including ground fiber and satellite-ground stations); the metropolitan area network is responsible for the connection of different regions and different industries within the city, and the uplink backbone network , Downlink local area network; the local area network realizes the access of multiple terminals in a unit or a place.

The construction of quantum secure communication network can be integrated with the optical fiber network infrastructure. The core equipment of the quantum secure communication network can be deployed in the computer room and site of the optical fiber network. With the improvement of the degree of integration, it can also be combined with classical communication equipment. Fusion. Through optical fiber connection (currently the backbone link uses idle optical fiber, metropolitan area networks and local area networks can reuse optical fibers with classical communication equipment), a quantum secure communication network with relatively complete coverage can be formed quickly and smoothly, thereby realizing basic Information networks, important information systems, important industrial control systems, and government information systems have strong security protections.

KDU’s quantum security products include quantum security communication network core equipment, quantum security application products, core components and management And control software, among which the core equipment of quantum secure communication network is the main source of income.

The industrialization of the core equipment of the quantum secure communication network is based on the injection-locked light source and coding technology, qkd polarization coding modulation technology, qkd self-stabilization intensity modulation technology, qkd channel wavelength division multiplexing technology, qkd channel self Adaptation is the result of technological transformation.

Among the core equipment of quantum security communication network, the main source of income is qkd products, and its specific use is quantum encryption. Distribution of keys.

The distribution of quantum keys uses quantum physics principles, which can realize remote key exchange or negotiation and guarantee keys The security of exchange is the first practical quantum information technology.

Compared with public key cryptography technology that uses mathematical problem solving to realize remote key exchange, and uses the computational complexity of the solution to ensure the security of key distribution, quantum key distribution is fundamentally different in principle.

The main advantage of quantum key distribution lies in security, that is, no matter what kind of calculation and analysis ability the attacker has, or even any quantum calculation and analysis ability, quantum key distribution is safe:

It can be seen from the working principle diagram that qkd is a result of negotiation between two partiesIn the process of sharing the key, the sending and receiving devices are connected to a certified classical channel through a quantum channel. The quantum channel is used to transmit the qubit signal carried by the quantum state, which can be optical fiber, free space (including satellite links) and other physical Medium, the classical channel is used for the information exchange between the sender and the receiver in the post-processing step of base vector comparison and other data.

Although quantum secure communication technology has advantages over traditional key distribution technology, there are still difficulties in the promotion of this technology at present. This is caused by several reasons:

One, quantum secure communication products and Compared with traditional cryptographic products, it has no advantages in terms of stability and price. For example, the mean time between failures of cryptographic machines generally reaches 30,000 hours, but the current mean time between failures of HKUST products is about 20,000 hours. It is optimistic that with the chip-based development and large-scale application of quantum key distribution products, the gap in cost and price will gradually narrow.

Secondly, the time for the large-scale application of quantum secure communication products needs to be evaluated and certified by the competent authority. This is because high-end safety demand groups have strict requirements on the qualifications of safety products.

Third, quantum secure communication products are still in the stage of standardization system construction, and standardization is an important part of the technology's move toward industrial scale. The construction of standardization requires the formation of a complete standard system that supports large-scale qkd networking, operation, application, and certification, which takes time.

This means that it will take time for the quantum secure communication technology application market to explode. From the perspective of the entire information security industry, cryptographic technology and products are highly regulated high-end areas with limited industry suppliers but sufficient competition. Traditional keys Distributors (Weistcom, Xingtang Communication, Zhongfu Information, Feitianxinxin, Geer Software) will not be able to attack the USTC National Shield for a while.

From the perspective of direct competition of quantum confidential communication products, there are few product suppliers in this field. In addition to the National Shield of HKUST, there are only id quantique in Switzerland, Anhui Wentian Quantum Technology Company, and Zhejiang Kyushu Quantum As a technology company, HKUST National Shield is now the company with the highest market share in China's quantum communications field, which means that more market growth of HKUST National Shield in the future will mainly come from the overall growth of the quantum secure communication industry.

On the whole, although HKUST National Shield cannot bring real returns to shareholders for the time being, the net operating cash flow is negative from 2016 to 2018, and the profit earned will continue to flow. A high proportion of R&D investment, but this also means that the establishment of a moat will block future competitors. The so-called predecessors planted trees and future generations will enjoy the shade. For the development of the USTC National Shield, you may wish to look forward to it optimistically.

Author: Zhou Zhiwei

Editor: Shang Peng Jing