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Quantum communication method and correlated device

A technology of quantum communication and quantum light, applied in the field of quantum communication methods and related devices, to achieve the effects of reducing interference, improving safety distance, and reducing loss

Pending Publication Date: 2017-12-12
HUAWEI TECH CO LTD
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Problems solved by technology

And because the scattering intensity of the Stokes scattering region is greater than that of the anti-Stokes scattering region, when the quantum optical signal is placed in the L-band with a longer wavelength, the quantum optical signal is mainly affected by the Stokes scattering region, At this time, the quantum optical signal is greatly affected by the Raman noise

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  • Quantum communication method and correlated device
  • Quantum communication method and correlated device
  • Quantum communication method and correlated device

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Embodiment Construction

[0090] In order to make the object, technical solution and beneficial effects of the present invention more clear, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0091] figure 1 It exemplarily shows a schematic diagram of a system architecture applicable to the embodiment of the present invention, as shown in figure 1 As shown, the system architecture applicable to this embodiment of the present invention includes a sending device 1107 and a receiving device 1108 . The sending device 1107 and the receiving device 1108 in the embodiment of the present invention may be respectively located in two network devices or two user devices; or the sending device 1107 is located in a network device, and the receiving device 1108 is located in a user device...

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Abstract

The embodiment of the invention relates to the technical field of communication, and especially relates to a quantum communication method and device. The communication method and device are used for reducing the impact on a quantum optical signal from Raman noise during the mixed transmission of a classic optical signal and the quantum optical signal. In the embodiment of the invention, the method comprises the steps that a transmission apparatus generates a to-be-processed optical signal and a quantum optical signal, wherein the to-be-processed optical signal at least comprises the classic optical signal; the transmission device carries out the coupling of the to-be-processed optical signal and the quantum optical signal, and obtains and transmits the coupled optical signal. Because the wavelength of the classic optical signal is located at L band and / or C band and the wavelength of the quantum optical signal is located at S band, the wavelength of the band of the classic optical signal is greater than the wavelength of the band of the quantum optical signal, and the quantum optical signal can be located in an anti-Stokes scattering region, thereby effectively reducing the degree of impact on the quantum optical signal from the Raman noise.

Description

technical field [0001] The embodiments of the present invention relate to the technical field of communication, and in particular, to a quantum communication method and a related device. Background technique [0002] In order to effectively solve the problem of information security, Quantum Key Distribution (Quantum Key Distribution, referred to as QKD) technology came into being, and is currently moving towards market practicality. [0003] For a one-way QKD system, its implementation is by encoding a set of random numbers on the quantum state of the quantum optical signal by the sending device, which is detected by the receiver of the receiving device after being transmitted through the quantum channel, and then the sending device and Through a series of processing procedures such as data comparison and negotiation of the classic channel, the receiving device finally enables both parties to share a set of secure random number keys. In a typical QKD system, the optical fib...

Claims

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Application Information

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IPC IPC(8): H04L9/08
CPCH04L9/0852H04B10/2537H04J14/02H04B10/70H04B10/506
Inventor 苏长征陆亮亮
Owner HUAWEI TECH CO LTD
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