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arXiv 2003.12096quant-ph
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工程快速高保真量子操作与约束相互作用

Engineering Fast High-Fidelity Quantum Operations With Constrained Interactions

Thales Figueiredo Roque, Aashish A. Clerk, Hugo Ribeiro

摘要:

了解如何调整量子动力学以实现所需的进化是几乎所有量子技术的关键问题。我们提出了一个非常普遍的方法,设计高效率的控制序列,总是完全兼容的可用的相互作用和可调性的实验约束。我们的方法减少到最后通过求解一组与时间无关的线性方程组来找到控制场。我们说明了我们的方法,通过将其应用到一些物理相关的问题:强驱动限制的两级系统,快速压缩在参数驱动腔,泄漏问题transmon量子比特门,和加速SNAP门在量子比特腔系统。

英文摘要:

Understanding how to tailor quantum dynamics to achieve a desired evolution is a crucial problem in almost all quantum technologies. We present a very general method for designing high-efficiency control sequences that are always fully compatible with experimental constraints on available interactions and their tunability. Our approach reduces in the end to finding control fields by solving a set of time-independent linear equations. We illustrate our method by applying it to a number of physically-relevant problems: the strong-driving limit of a two-level system, fast squeezing in a parametrically driven cavity, the leakage problem in transmon qubit gates, and the acceleration of SNAP gates in a qubit-cavity system.

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