Fault-tolerant extended rectangle construction of quantum CNOT gate using（49,1,9）quantum code with the overlap method

Abstract

Abstract: A CNOT Gate is an important quantum component for quantum computation, especially which is used in fault-tolerant extended-rectangle construction widely. However, the ancilla state preparation circuit is normally complicated in the construction of fault-tolerant extended-rectangle for quantum CNOT Gates, which brings inconvenience in the design and implementation. We study the construction of fault-tolerant quantum CNOT Gates using (49, 1, 9) quantum code with the overlap method in ancilla state preparation and simplify the encoded ancilla preparation state circuit. The result shows that the construction is optimized and the number of CNOT Gates needed is 224 less than that with the traditional Latin rectangle method.

Key words: quantum computation, quantum error-correction coding, overlap method, fault-tolerant quantum computation, fault-tolerant extended-rectangle for quantum CNOT Gates

CLC Number:

O413.1

WANG Le, LIU Ying, WANG Yan-yan, ZHAO Sheng-mei. Fault-tolerant extended rectangle construction of quantum CNOT gate using（49,1,9）quantum code with the overlap method[J]. J4, 2014, 31(2): 179-185.

References

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