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Quantum key distributing integrated machine implementing method

A quantum key distribution and implementation method technology, which is applied in the field of quantum key distribution system, can solve the problem of single system of quantum key distribution system, increased cost investment, and is not conducive to the integration and function diversification of quantum key distribution system and other issues, to achieve the effect of reducing costs and facilitating networking

Inactive Publication Date: 2018-03-09
浙江科易理想量子信息技术有限公司
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Problems solved by technology

[0003] In the existing technology, the quantum key distribution system based on the COW protocol and the BB84 protocol is a single system, such as the sending end and the receiving end are separate systems
Because quantum key distribution systems are all point-to-point transmission, this system will bring a very inconvenient problem. If there is a place where the network needs to send and receive keys, then two keys have to be placed in this place at the same time. two devices (one for sending quantum key information and one for receiving quantum key information)
This method not only needs to occupy a large network space, but also increases the cost input, and is not conducive to the integration and functional diversification of the quantum key distribution system

Method used

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  • Quantum key distributing integrated machine implementing method
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Embodiment Construction

[0016] like figure 1 As shown, the quantum key distribution all-in-one machine of the present invention includes: a decoding module for decoding received encoded information; a detection module connected to the decoding module; a main board connected to the detection module; a first random number generator , connected to the main board; a second random number generator, connected to the main board; a first data interface, connected to the main board; a second data interface, connected to the main board; a generating module, connected to the main board , for the preparation of single-photon sources. In this embodiment, the decoding module is an interference ring; the detection module is a single-photon detector, and it is a double-headed single-photon detector. The receiving end has two single-photon detection modules at the same time, and one is used to detect the The other detector is used to detect the interfering decoy state information, so as to ensure the security of key...

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Abstract

The present invention provides a method for implementing a quantum key distribution integrated machine, at least including the following steps: decoding received coded information; generating a quantum key through the decoded information; receiving information from the first classical channel; preparing a quantum key The key is sent and sent; the information is transmitted through the second classical channel, which can realize the distribution and reception of the quantum key at the same network node at the same time. The network is convenient and reduces the cost at the same time.

Description

【Technical field】 [0001] The invention relates to quantum encrypted communication, in particular to a quantum key distribution system. 【Background technique】 [0002] In the current quantum encryption communication technology, the COW protocol and the BB84 protocol are typical communication protocols in quantum communication technology. Among them, the COW protocol, also known as the coherent and consistent quantum key communication protocol, is also a relatively mature quantum communication protocol in the optical fiber phase quantum key communication system so far. Its main working principle is as follows: the COW protocol mainly includes the sending end Alice and the receiving end Bob. The main function of the sending end is to prepare the single photon source required for quantum key distribution and encode the corresponding information through optical pulses. The receiving end has an interference ring (different from the classic BB84 protocol, the transmitting end of t...

Claims

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Application Information

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IPC IPC(8): H04L9/08
CPCH04L9/0858H04L9/0852
Inventor 徐生福
Owner 浙江科易理想量子信息技术有限公司
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