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arXiv 1002.0420quant-ph
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泛2-定域哈密顿量子计算

Universal 2-local Hamiltonian Quantum Computing

Daniel Nagaj

摘要:

提出了一种量子计算通用的哈密顿量子计算方案(BQP)。我们的哈密顿量是一个多项式数(在量子线路中的门的数量L)的时间无关的,常数范数,2-本地量子比特-量子比特相互作用项的总和。此外,系统中的每个量子位只与恒定数量的其他量子位相互作用。计算机分三个步骤运行-从一个简单的初始产品状态开始,将其演化为L^2阶的时间(直到对数因子),并以两个量子比特的测量结束。我们的模型不同于以前的通用2-本地哈密顿结构,因为它不使用微扰工具,不需要大的能量惩罚的哈密顿量,不需要运行缓慢,以确保绝热演化。

英文摘要:

We present a Hamiltonian quantum computation scheme universal for quantum computation (BQP). Our Hamiltonian is a sum of a polynomial number (in the number of gates L in the quantum circuit) of time-independent, constant-norm, 2-local qubit-qubit interaction terms. Furthermore, each qubit in the system interacts only with a constant number of other qubits. The computer runs in three steps - starts in a simple initial product-state, evolves it for time of order L^2 (up to logarithmic factors) and wraps up with a two-qubit measurement. Our model differs from the previous universal 2-local Hamiltonian constructions in that it does not use perturbation gadgets, does not need large energy penalties in the Hamiltonian and does not need to run slowly to ensure adiabatic evolution.

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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