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arXiv 1612.03033quant-ph
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Dirac动力学量子模拟中的鲁棒态制备

Robust state preparation in quantum simulations of Dirac dynamics

Xue-Ke Song, Fu-Guo Deng, Lucas Lamata, J. G. Muga

摘要:

非相对论性系统(例如超冷俘获离子)可在特定条件下执行狄拉克方程动力学的量子模拟。由此产生的哈密顿量和动力学是高度可控的,但动量和内部能级之间的耦合对精确操纵波包中的内部态造成了一些困难。我们使用的运动不变量逆向工程鲁棒的人口反转过程与均匀的,随时间变化的模拟电场。这证明了逆向工程技术在提高量子模拟协议性能方面的实用性。

英文摘要:

A non-relativistic system such as an ultracold trapped ion may perform a quantum simulation of a Dirac equation dynamics under specific conditions. The resulting Hamiltonian and dynamics are highly controllable, but the coupling between momentum and internal levels poses some difficulties to manipulate the internal states accurately in wave packets. We use invariants of motion to inverse engineer robust population inversion processes with a homogeneous, time-dependent simulated electric field. This exemplifies the usefulness of inverse-engineering techniques to improve the performance of quantum simulation protocols.

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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