There are significant technological differences between quantum communication and network security, which are mainly reflected in the following aspects:

Technical principles:
Quantum communication: A novel communication method that utilizes quantum superposition states and entanglement effects for information transmission. It is based on the three principles of uncertainty, measurement collapse, and non cloning in quantum mechanics, providing an absolute security guarantee that cannot be eavesdropped or cracked by calculations.

Network security: mainly involves multiple fields such as computer science, network technology, communication technology, cryptography, and information security technology. It focuses on protecting the hardware, software, and data in network systems from accidental or malicious damage, changes, and leaks, and ensuring the continuous, reliable, and normal operation of the system.
Technical features:



Quantum communication:
High timeliness: Quantum communication lines have almost zero latency, fast information transmission speed, and unobstructed processes.
Strong anti-interference: Information transmission is not carried out through traditional channels and is independent of the medium of communication between the two parties.
Good confidentiality: Based on the quantum non cloning theorem, ensuring the security of information transmission.

Network security:
Integrity: Information maintains its characteristics of non modification, non destruction, and non loss during transmission, exchange, storage, and processing.
Confidentiality: Information shall not be disclosed to unauthorized individuals, entities, or processes in accordance with given requirements.
Availability: Network information can be accessed correctly by authorized entities and can be used normally or restored in abnormal situations as required.


Implementation method:
Quantum communication:
Quantum teleportation: Based on the distribution of quantum entanglement pairs and the joint measurement of Bell states, the information transmission of quantum states is achieved.
Quantum key distribution, also known as quantum cryptography, utilizes the transmission measurement of quantum superposition states to achieve secure quantum key sharing between communication parties, and then achieves unconditional absolute security in secure communication through a symmetric encryption system of one-time encryption.
Network security: By adopting various security technologies and means, such as firewalls, intrusion detection systems, encryption technologies, etc., to ensure the security of network systems.

Safety performance:
Quantum communication provides an absolute security guarantee that cannot be eavesdropped or cracked, especially in the field of quantum key distribution, where its security has been widely recognized.
Although network security is also committed to protecting the security of network systems, it may be affected by various attacks and threats due to its reliance on traditional encryption techniques and security protocols.

There are significant differences between quantum communication and network security in terms of technical principles, technical characteristics, implementation methods, and security performance. Quantum communication, with its unique principles and advantages, provides new solutions and ideas for future network security.