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arXiv 1407.8296quant-ph
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拓扑量子线路的跨级验证

Cross-level Validation of Topological Quantum Circuits

Alexandru Paler, Simon J. Devitt, Kae Nemoto, Ilia Polian

摘要:

量子计算为解决计算难题提供了一种新的方法,建造量子计算机的探索已经开始。虽然第一次构建尝试是成功的,但由于量子比特(qubit)固有的脆弱性,可扩展性从未实现。在众多实现可扩展性的方法中,拓扑量子计算(TQC)是最有前途的一种,它基于灵活的纠错方法并利用简单的基于测量的计算技术。TQC电路被定义在由硬件产生的物理量子比特的大的、均匀的、三维晶格内,并且该晶格的物理体积直接与计算所需的资源相关。电路优化可能导致电路规范和实现之间的非直观失配。在本文中,我们介绍了第一种方法的跨级验证的TQC电路。电路的规范基于稳定器形式主义来表达,并且通过在物理量子比特水平上映射拓扑来检查稳定器表,随后进行量子线路仿真。仿真结果表明,纠错电路的跨级验证是可行的。

英文摘要:

Quantum computing promises a new approach to solving difficult computational problems, and the quest of building a quantum computer has started. While the first attempts on construction were succesful, scalability has never been achieved, due to the inherent fragile nature of the quantum bits (qubits). From the multitude of approaches to achieve scalability topological quantum computing (TQC) is the most promising one, by being based on an flexible approach to error-correction and making use of the straightforward measurement-based computing technique. TQC circuits are defined within a large, uniform, 3-dimensional lattice of physical qubits produced by the hardware and the physical volume of this lattice directly relates to the resources required for computation. Circuit optimization may result in non-intuitive mismatches between circuit specification and implementation. In this paper we introduce the first method for cross-level validation of TQC circuits. The specification of the circuit is expressed based on the stabilizer formalism, and the stabilizer table is checked by mapping the topology on the physical qubit level, followed by quantum circuit simulation. Simulation results show that cross-level validation of error-corrected circuits is feasible.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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