According to the article "New Progress of Superconducting Array Single Photon Detector" published by Nanjing University on the news website on June 9, 65438, we can see that it describes in detail that the team cooperated with the 14th Research Institute of China Electronics Technology Group to successfully test superconducting single photon lidar in the experimental field, and realized real-time tracking and detection of targets hundreds of kilometers away in the low-altitude atmosphere.
Then a term "single photon" appears here, because photon is the smallest energy unit of light, and photon radar belongs to a kind of lidar. Traditional radar is generally microwave-band radar, while photon radar belongs to optical band, so the radar technology derived from it can achieve high accuracy that traditional radar can't, and stealth fighters composed of absorbing materials and anti-electromagnetic wave structures have nothing to hide from this radar.
This single photon radar is a kind of quantum radar, because its sensitivity has reached the quantum level. At present, the 20 18 Zhuhai Air Show should show a model under development, which is mainly composed of a laser transmitter and a laser receiver, as well as a liquid helium Dewar box for maintaining superconducting environment. The level at that time should be described by CLP 14 in an article "Development of Quantum Detection Technology" published on 20 17. 20 15 compares the detection performance of large targets around 100 km. After several years of development, real-time tracking and detection of moving and fixed small targets hundreds of kilometers away will be realized in 2020.
And the progress is also obvious. One is 100 km, and the other is a big target, but now it is a moving small target. What is more important is to track and detect the target in real time. This means that for some stealth fighters, they can capture the opponent's trajectory and real-time data remotely like a camera. This can be said to be the biggest advantage of stealth fighters obtained by other technical means after the anti-stealth fighter technology obtained in the traditional millimeter wave field.
Now the key of this technology is an article called "SNSPD device core", which can make optical signals enter the resonant cavity and NbN monitoring area through the optical fiber on the back of the SNSPD device, and the converted electrical signals enter the back-end signal processing and counting through the coaxial cable, and finally generate the observable target situation. Of course, this superconductor is undoubtedly dependent on "rare earth" materials at present.
However, the largest rare earth mine in China has recently appeared. For decades, when "iron ore" was dug, it had to be heartbreaking. At present, almost 70% of new scientific and technological inventions in the world are realized by rare earth materials. Especially in the future military science and technology, military scientific research based on rare earth technology is the only way to break each other's information and electromagnetic monopoly. Therefore, countless scientists and military workers are developing new technologies and equipment in front to protect peace and confront powerful enemies. Protect important resources and provide the most basic impetus for the development of science and technology. After all, no matter how clever a woman is, she will never cook without rice.
In addition to military technology, this "quantum radar" undoubtedly has its own unique uses in civil geography and resource detection. However, before that, I still look forward to the early birth of a practical radar that can strike hundreds of kilometers of anti-stealth fighters. In this way, we can fully gain the advantage of anti-stealth ability, avoid the blackmail of many stealth fighters around us, and at the same time do not have to be dragged into the arms race of stealth fighters. Therefore, it is no exaggeration to say how high the strategic value of this "quantum radar" is.