A mechanical qubit

IF 44.7 1区综合性期刊 Q1 MULTIDISCIPLINARY SCIENCES

Science Pub Date : 2024-11-14 DOI:10.1126/science.adr2464

Yu Yang, Igor Kladarić, Maxwell Drimmer, Uwe von Lüpke, Daan Lenterman, Joost Bus, Stefano Marti, Matteo Fadel, Yiwen Chu

引用次数: 0

Abstract

Although strong nonlinear interactions between quantized excitations are an important resource for quantum technologies based on bosonic oscillator modes, most electromagnetic and mechanical nonlinearities are far too weak to allow for nonlinear effects to be observed at the single-quantum level. This limitation has been overcome in electromagnetic resonators by coupling them to other strongly nonlinear quantum systems such as atoms and superconducting qubits. We demonstrate the realization of the single-phonon nonlinear regime in a solid-state mechanical system. The single-phonon anharmonicity in our system exceeds the decoherence rate by a factor of 6.8, allowing us to use it as a mechanical qubit and demonstrate initialization, readout, and single-qubit gates. Our approach provides a powerful quantum acoustics platform for quantum simulations, sensing, and information processing.

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机械量子比特

虽然量子化激元之间的强非线性相互作用是基于玻色振荡器模式的量子技术的重要资源，但大多数电磁和机械非线性太弱，无法在单量子水平观测到非线性效应。电磁谐振器通过与原子和超导量子比特等其他强非线性量子系统耦合，克服了这一限制。我们展示了在固态机械系统中实现单光子非线性机制的方法。我们系统中的单声子非谐波性超过退相干率 6.8 倍，使我们能够将其用作机械量子比特，并演示初始化、读出和单量子比特门。我们的方法为量子模拟、传感和信息处理提供了一个强大的量子声学平台。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Science 综合性期刊-综合性期刊

CiteScore

61.10

自引率

0.90%

发文量

审稿时长

2.1 months

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