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arXiv quant-ph/0606137quant-ph
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量子针织

Quantum Knitting

S. Garnerone, A. Marzuoli, M. Rasetti

摘要:

我们通过解决一些与结和辫群相关的算法问题来分析结的数学理论与量子物理之间的联系。纽结可以通过“纽结不变量”来区分,其中琼斯多项式起着突出的作用,因为它可以与拓扑量子场论中的可观测量相关联。虽然计算琼斯多项式的问题在经典复杂性理论的框架中是棘手的,但最近人们认识到量子计算机能够以有效的方式近似它。这里讨论的量子算法代表了量子计算的突破,因为近似琼斯多项式实际上是一个“通用问题”,即量子计算机可以有效处理的最困难的问题。

英文摘要:

We analyze the connections between the mathematical theory of knots and quantum physics by addressing a number of algorithmic questions related to both knots and braid groups. Knots can be distinguished by means of `knot invariants', among which the Jones polynomial plays a prominent role, since it can be associated with observables in topological quantum field theory. Although the problem of computing the Jones polynomial is intractable in the framework of classical complexity theory, it has been recently recognized that a quantum computer is capable of approximating it in an efficient way. The quantum algorithms discussed here represent a breakthrough for quantum computation, since approximating the Jones polynomial is actually a `universal problem', namely the hardest problem that a quantum computer can efficiently handle.

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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