一维量子元胞自动机中的纠缠动力学
Entanglement Dynamics in 1D Quantum Cellular Automata
摘要：
量子计算机的物理实现的几个建议方案由排列在细胞阵列中的量子位组成。在量子计算的量子线路模型中，在任意距离的晶格量子比特对之间需要一系列复杂的双量子比特门操作。另一种基于量子元胞自动机（QCA）的量子计算模型只需要可以并行实现的同质局部相互作用。在实际实验中，这将是一个巨大的简化。我们找到了在一维Ising自旋链中构造酉QCA的最小物理要求，并证明了最佳脉冲序列对信息传输和纠缠分布的影响。我们还介绍了非幺正QCA理论，并通过实例说明了非幺正规则可以产生环境辅助纠缠。
英文摘要：
Several proposed schemes for the physical realization of a quantum computer consist of qubits arranged in a cellular array. In the quantum circuit model of quantum computation, an often complex series of two-qubit gate operations is required between arbitrarily distant pairs of lattice qubits. An alternative model of quantum computation based on quantum cellular automata (QCA) requires only homogeneous local interactions that can be implemented in parallel. This would be a huge simplification in an actual experiment. We find some minimal physical requirements for the construction of unitary QCA in a 1 dimensional Ising spin chain and demonstrate optimal pulse sequences for information transport and entanglement distribution. We also introduce the theory of non-unitary QCA and show by example that non-unitary rules can generate environment assisted entanglement.
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。
