Error capture circuit and decoding method based on asymmetric quantum cycle burst error code

A technology of burst error and error capture, applied in the field of quantum error correction code decoding, can solve the problem of lack of research on quantum error correction code and achieve the effect of optimizing decoding performance and good asymmetry

Pending Publication Date: 2022-05-17
NANJING UNIV OF SCI & TECH
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Problems solved by technology

[0004] However, most of the current quantum error correction technologies, especially the construction of quantum error correction codes, are aimed at correcting independent and random types of errors. There is relatively little research on quantum error correction coding and decoding for correcting related errors in quantum memory channels.
The current correction quantum burst error code is only a direct extension based on the CSS construction method, which has great limitations

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  • Error capture circuit and decoding method based on asymmetric quantum cycle burst error code
  • Error capture circuit and decoding method based on asymmetric quantum cycle burst error code
  • Error capture circuit and decoding method based on asymmetric quantum cycle burst error code

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[0067] In order to make the object, technical solution and advantages of the present invention clearer, 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.

[0068] An error capture circuit based on a quantum cyclic burst error code, comprising a first switch 1, a second switch 2, a third switch 3 and an error accompanying shift register;

[0069] The first switch 1 is connected to the error accompanying shift register, the error accompanying shift register is connected to the second switch 2 , and the error accompanying shift register is also connected to the third switch 3 at the same time.

[0070] refer to figure 2 and image 3 , gives the X error and Z error capture circuit.

[0071] by figure 2 For example, first turn on the first switch 1, ...

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Abstract

The invention discloses an error capture circuit and a decoding method based on an asymmetric quantum cycle burst error code, the error capture circuit performs cyclic shift on an error syndrome to quickly position an error position, and any burst X error and Z error in a code word design decoding length range can be corrected; the decoding method is based on an asymmetric quantum cycle burst error code and an error capture circuit, Z errors and X errors can be corrected respectively, the decoding performance is optimized, meanwhile, the decoding limit of the quantum coding theory is brought into full play by fully considering the degeneracy characteristic in decoding, and more quantum burst errors are corrected under the same code rate.

Description

technical field [0001] The invention belongs to the field of decoding of quantum error-correcting codes, in particular to an error capturing circuit and a decoding method based on quantum cyclic burst error codes. Background technique [0002] In the process of quantum information processing, there will inevitably be interactions between the quantum system and the external environment, which will seriously attenuate the coherence of the quantum system, and eventually degenerate from a coherent superposition state to a mixed state, resulting in quantum decoherence. The quantum noise interference caused by the quantum decoherence effect is a major obstacle in the process of quantum information processing; on the other hand, the inaccuracy of quantum logic gates will lead to the rapid spread of quantum errors in the quantum computing process, which eventually leads to calculation Failure, another big hurdle for quantum information processing. Quantum error correction technolog...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03M13/17H03M13/15
CPCH03M13/175H03M13/1545
Inventor 樊继豪李骏王诚钱玉文梅镇
Owner NANJING UNIV OF SCI & TECH
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