Kyushu Quantum Beijing R & D center is looking for a breakthrough in these three directions.After Kyushu Quantum Beijing R & D Center, Dr. Huang Lei Lei, Department of Engineering Science, University of Oxford, said in an interview that their goal is to develop the world's fastest Quantum random number generator, and continue to optimize, make the device smaller and cheaper.
Quantum random number generator (hereinafter referred to as the generator) in the middle of the QKD system, plays a role in the single photon emitted by the laser random number modulation encryption and decryption, its key role goes without saying.
Use the same chip to make the same quantum performance of similar products
Kyushu Quantum based on the phase noise and vacuum fluctuations to produce two different principles of the product from the beginning, they aimed at high-speed, ready to do Gbps rate to high-end development, but also for different user needs to launch different grades The product.
'High-performance products may be used in some large servers, while some of the more terminal devices, you can not use that much random number, you can use the cost of the first performance is lower,' R & D engineers in Beijing R & D Center Zhang Dapeng We introduce.
In order to reduce costs, it is necessary to start with the selection at the source and then optimize the design, taking into account the materials used in the process as well as the manufacturing process, which requires familiarity with the entire process, practical engineering experience and understanding of the procurement channels Engineers can do it.
In the random number generator, the chip actually plays an important role.Currently the key chip relies mainly on foreign imports, many are restricted goods, not only expensive, but also difficult to mass production.Many papers in the field of quantum information chip used in The actual embargo on the international community, and many key devices, although the performance is excellent but the price is very high to achieve the real industrialization, it is necessary to use reasonable cost, common chips and common devices to meet customer demand performance, or even Is similar to the performance of the paper, but can not blindly pursue the highest performance index, it is more academic requirements, we are directed at industrialization, 'said Huang Lei Lei.
The goal of Kyushu is to develop a stable random number generator with common chips available on the market while guaranteeing performance of at least or better than similar products.
Upgrade product safety, improve product performance
It is understood that the quantum random number generator consists of three modules: light source, photodetector and digital signal processing circuit board.
The entire encryption process is as follows: The optical signal is converted into an electrical signal by detecting the quantum noise of the light source, after which the digital electrical signal processing circuit board randomly converts the electrical signal into a digital signal expressed in 0 and 1, performed by the FPGA Real-time data processing.
'The initial technical difficulties have been overcome, and the product prototype has now been made. The next step is to consider how to miniaturize and reduce costs.' "Dr. Huang Lei Lei introduced us, but we also go to the high end , Quantum random number generator with higher safety level, such as quantum random number generator independent of source and measurement device. "Kyushu Quantum has been among the best research in the field of high speed quantum random number generator Team development forefront.
It is understood that Kyushu Quantum currently developed this random number generator runs quite well, but it also has the working environment is simple, high reliability, high quality random number production guarantee, highly integrated features. The product also has a heat Pluggable, highly reliable during insertion / removal, with no impact on the network in use.
For the future, head of Beijing R & D Center, Huang Leilei, said the design goals of Kyushu's quantum random number generator are mainly aimed at safety.The safety of generators is mainly divided into two types: firstly, equipment can not be controlled by spoilers or snoopers; The other is that even if the device is controlled, the resulting random numbers are safe and secure, with the goal of further optimization, 'and we are confident in this regard,' said Huang Lei Lei.