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两位量子纠错的编码方案及量子电路的实现 被引量:3

Coding and Correcting Circuits for Two-Quantum Errors
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摘要 在无测量电路中,提出两位纠错量子电路的概念。构造出纠两位错的量子编码方案及量子纠错电路,此电路可以同时纠正量子信息中的一位错、两位错,突破了以往量子电路只能纠正一位错的局限。引入编码电路编码输入信息的辅助位,根据辅助位的不同判断输入信息的不同量子状态。在设计七量子位的纠错电路过程中,提出了模块化思想,以五量子位纠错电路为基础模块构建纠错电路,简化了多量子位纠错电路的设计过程。 Under the non-measuring circuits,it is used the truth table method to propose the concept of two quantum error-correcting circuits and then a circuit which can code and correct one-qubit error、two-qubits error is construeted.This quantum circuit can correct one-qubit error and two-qubits error at the same time,break through the former limit that the circuit can only correct one-qubit error.A coding circuit is recommended to encod auxiliary bits of inputing information and judge the different input-bits quantum states according to different auxiliaries.During the process of designing 7-qubits error correction circuit,a modular thinking is advanced based on the 5-qubits error-correction circuits which can simplify the multi-qubits error-correction circuit design process.
出处 《光学学报》 EI CAS CSCD 北大核心 2011年第5期234-238,共5页 Acta Optica Sinica
基金 安徽省自然科学基金(090412038) 安徽省人才开发基金(2007Z028)资助课题
关键词 量子光学 量子纠错码 量子线路 两位错 辅助位 quantum optics quantum error-correction code quantum circuit two quantum error auxiliary bit
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