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arXiv quant-ph/0108146quant-phcond-mat
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用量子网络模拟物理现象

Simulating Physical Phenomena by Quantum Networks

R. Somma, G. Ortiz, J. E. Gubernatis, E. Knill, R. Laflamme

摘要:

物理系统的特征是相互作用的基本成分的系综,可以用不同的可观测量或算子代数来表示和研究。例如,一个完全极化的电子系统可以通过通常的费米子产生和湮灭算符生成的代数,或者通过使用泡利(自旋-1/2)算符的代数来研究。这两个代数之间的对应关系由Jordan-Wigner同构给出。正如我们之前提到的,类似的一对一映射使人们能够表示量子计算机中的任何物理系统。在本文中,我们发展和利用这个基本概念在量子信息处理模拟一般的物理现象的量子网络。给出了一种量子线路,它可用于有效地计算具有哈密顿量$H$的任意系统的物理性质(如可观测量的谱或关联函数)。

英文摘要:

Physical systems, characterized by an ensemble of interacting elementary constituents, can be represented and studied by different algebras of observables or operators. For example, a fully polarized electronic system can be investigated by means of the algebra generated by the usual fermionic creation and annihilation operators, or by using the algebra of Pauli (spin-1/2) operators. The correspondence between the two algebras is given by the Jordan-Wigner isomorphism. As we previously noted similar one-to-one mappings enable one to represent any physical system in a quantum computer. In this paper we evolve and exploit this fundamental concept in quantum information processing to simulate generic physical phenomena by quantum networks. We give quantum circuits useful for the efficient evaluation of the physical properties (e.g, spectrum of observables or relevant correlation functions) of an arbitrary system with Hamiltonian $H$.

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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