Quantum state classical sequence rearrangement encrypition method in quantum key distribution

A technology of quantum key distribution and encryption method, which is applied in the field of quantum secure communication and can solve problems such as long waiting time

Inactive Publication Date: 2004-02-25
TSINGHUA UNIV
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Problems solved by technology

This requires a longer waiting time

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  • Quantum state classical sequence rearrangement encrypition method in quantum key distribution
  • Quantum state classical sequence rearrangement encrypition method in quantum key distribution
  • Quantum state classical sequence rearrangement encrypition method in quantum key distribution

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Embodiment Construction

[0078] Principle diagram of the present invention sees Figure 4 . During the transmission of entangled particles, Alice first modulates the quantum signal source, that is, prepares different Bell ground states and records the corresponding results; Choose different encryption methods. After receiving the entangled particle pair data set sent by Alice, Bob selects the corresponding transmission sequence decryption method according to the corresponding control code, restores the original order of the entangled particle pair, and performs Belkey ​​joint measurement to read out the information sent to him by Alice.

[0079] In quantum key distribution, Alice and Bob determine in advance some rearrangement methods for the transmission order of particles in the entangled particle system, that is, the transmission order encryption method and the corresponding decryption method. For example, we take the number B=4 of entangled pairs in each data group as an example to illustrate th...

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Abstract

The quantum state classical sequence rearrangement encryption method in quantum key distribution belongs to the field of quantum secret communication. It mainly utilizes the characteristics of quantum to encipher the production process of quantum key, under the condition of ensuring safety, at the same time, and transfer all the particles of tangled system so as to raise transmission distance.

Description

technical field [0001] The quantum state classical sequence rearrangement encryption method in quantum key distribution belongs to the technical field of quantum secret communication. Background technique [0002] Quantum cryptography communication is an interdisciplinary subject developed in the last two decades. Different from traditional cryptography, quantum cryptography communication is the product of the combination of cryptography and quantum mechanics. It uses quantum states as information carriers and uses some principles of quantum mechanics to transmit and protect information. Usually, the two parties in the communication use the quantum state as the information carrier, use the principle of quantum mechanics, transmit through the quantum channel, and establish a shared key between the two parties in the secure communication, which is called Quantum Key Distribution (QKD). The property is determined by the "Heisenberg Uncertainty Relation" (or Uncertainty Princip...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04K1/00H04L9/00
Inventor 邓富国龙桂鲁
Owner TSINGHUA UNIV
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