SOLUTION
Release Time:2020-07-22
Click on:269 Times
The era of quantum communication industrialization is coming, but the requirements of the quantum communication industry on the innovation ability, practical ability and interdisciplinary integration ability of engineering talents are significantly improved. It is urgent for higher education to meet the industrial demand and cultivate engineering and technical talents with correct and profound understanding of quantum information. It can be said that quantum communication technology highly conforms to the development goal of new engineering education. Under the background of vigorous development of new engineering, integrating quantum communication into the construction of new engineering curriculum system conforms to the national social development trend, which is an important direction of curriculum reform and development of higher education.
There are the following difficulties in quantum information education for non-physics majors such as engineering:
(1) Students' knowledge system: there are few physics courses in the students' leading courses, and the content is relatively shallow. Quantum mechanics, nonlinear optics and quantum optics are compulsory pre courses for students majoring in physics. However, for engineering students, the lack of these courses will lead to greater difficulties in understanding quantum information;
(2) The teaching purpose of the course: from the background of quantum information, it is not a comprehensive introduction of quantum information technology, but to enable students to learn and use on the premise of accumulating basic knowledge, which challenges the teaching content and teaching methods;
(3) Design of practice platform: at present, the manipulation object of quantum information is mainly photons. In the existing university physics experiments, although there are optical related experimental contents, they do not fit the quantum information course well. At the same time, because of the high cost of professional quantum optical experimental platform, it is difficult to deploy comprehensively.
According to the characteristics of the above students, we have launched a quantum information education platform for engineering students:
1. Rich quantum information courses and experimental design
The curriculum design refers to the relevant courses of USTC. The curriculum system design fully considers the characteristics of students' education, and gradually advances in knowledge level, which is divided into three categories: quantum information foundation, quantum information application and quantum secure communication. At the same time, we divide it into two parts: one is the basic experimental course platform which focuses on daily teaching, and the other is the innovative experimental course and scientific research verification platform for senior undergraduates and postgraduates.
2. The experimental system of quantum information combining software and hardware
2.1 quantum key distribution experimental system
The experimental system of QKD is a special equipment designed according to the teaching, scientific research and application of quantum information. It is a set of quantum cryptography teaching experimental system which adopts polarization coding and supports the transmission of optical fiber channel.
The device adopts modular design, including the hardware and software implementation environment of each stage of QKD, including: preparation, coding, transmission, detection of quantum state four states, implementation of post-processing algorithm of QKD protocol (error correction, privacy amplification), storage and management of security key, and providing key output interface.
The system has the characteristics of low cost, high stability, wide wavelength range and high code rate. It is easy to operate, intuitive and easy to understand. It can be widely used in science popularization and teaching in Colleges and universities.
Figure 1 optical fiber polarization-encoding QKD experimental system
2.2 quantum optics simulation laboratory
Considering that there are many kinds of experimental systems of quantum information, but most of them are very expensive, so they can not be deployed for undergraduate students to carry out teaching experiments. Therefore, the experimental design of the course makes full use of the tools and methods brought by the development of computer technology, and adopts the method of combining virtual simulation with entity to solve the problem of shortage of teaching experimental resources. For experiments with entanglement and other physical characteristics and device operation, we carry out one-to-one modeling according to real physical devices, and paste the physical characteristics and control methods Near real devices. By building a 3D virtual simulation platform, students can operate a 3D simulation system similar to the real quantum optical experiment system, and actually understand the basic content of quantum information from entanglement source preparation to Bell state measurement.
Figure 2 quantum optics simulation laboratory
2.3 QKD experimental simulation software Qsim
For the quantum communication protocol, we also designed the simulation experiment content of quantum communication protocol based on the course. You can arrange the simulation experiment of BB84 protocol code rate calculation combined with decoy state. You can write simulation program through C language, MATLAB and python to realize the security key generation rate of quantum communication, and draw the relationship between code rate and transmission distance, so as to deepen the understanding of the protocol At the same time, through adjusting the system parameters of the simulation model, You can understand the influence of different devices and different parameters of devices on the system performance, and initially establish the corresponding relationship between the actual system and the theoretical model, as well as the security analysis ability of the actual system.
Fig. 3 QKD experimental simulation software Qsim
3. Customized lecture materials and curriculum design close to the characteristics of engineering
Students can understand the engineering materials and optimize the teaching platform.
Reference
[1] 陈巍,银振强,韩正甫,俞能海《网络空间安全本科量子信息教学实践》[J],网络与信息安全学报.2019
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