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arXiv 1002.0537quant-phcond-mat.other
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拓扑量子分解所需的资源

Resources Required for Topological Quantum Factoring

M. Baraban, N. E. Bonesteel, S. H. Simon

摘要:

我们考虑一个假设的拓扑量子计算机,其中量子比特由伊辛或斐波那契任意子组成。对于每种情况,我们计算执行Shor算法中计算量最大的步骤所需的时间和量子位(空间)数量,即模幂运算。对于Ising任意子,我们应用Bravyi的蒸馏方法[S. Bravyi,Phys.Rev.A73,042313(2006)],其组合拓扑和非拓扑操作以允许通用量子计算。通过对物理参数的合理限制,我们发现分解一个128位数需要大约10^3个斐波那契任意子,而至少需要3 × 10^9个伊辛任意子。其他蒸馏算法可以大大减少伊辛任意子的资源。

英文摘要:

We consider a hypothetical topological quantum computer where the qubits are comprised of either Ising or Fibonacci anyons. For each case, we calculate the time and number of qubits (space) necessary to execute the most computationally expensive step of Shor's algorithm, modular exponentiation. For Ising anyons, we apply Bravyi's distillation method [S. Bravyi, Phys. Rev. A 73, 042313 (2006)] which combines topological and non-topological operations to allow for universal quantum computation. With reasonable restrictions on the physical parameters we find that factoring a 128 bit number requires approximately 10^3 Fibonacci anyons versus at least 3 x 10^9 Ising anyons. Other distillation algorithms could reduce the resources for Ising anyons substantially.

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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