基于绝热捷径的两原子相位门设计

吴奇成; 夏岩

doi:doi:10.3788/jqo20172302.0004

量子光学学报, 2017, 23 (2): 122, 网络出版: 2017-07-05

基于绝热捷径的两原子相位门设计

Construct Shortcuts to Adiabatic Passage for the Implementation of Phase Gates in a Two-atom System

论文大纲

吴奇成 ^*夏岩

作者单位

福州大学物理与信息工程学院,福建福州 350116

相位门基于不变量的反向设计量子绝热捷径 phase gate invariant-based inverse engineering shortcuts to adiabatic passage

摘要

基于绝热捷径技术,我们提出了一个通过设计共振脉冲,仅用一个操作步骤便实现两原子相位门的理论方案。我们讨论了原子自发辐射和腔中光子泄漏对方案的影响,数值结果表明当前方案对上面的两种耗散效应和试验参数的误差都具有鲁棒性。此外,本方案所需的演化时间非常短并且在整个演化过程中都不需要额外引入复杂的脉冲。因此,这个方案在当前实验条件下是比较容易实现的。

Abstract

Based on the shortcuts to adiabatic technique,we propose a scheme for one-step implementation of phase gates through designing resonant laser pulses by invariant-based inverse engineering in a two-atom system. The effects of decoherence such as spontaneous emission and photon loss on the fidelity are discussed. Numerical results show that the scheme is insensitive to both error sources and variations of the parameters. Moreover, the interaction time in the scheme is very short and no extra complex laser pulses are needed during the whole process. Therefore, the scheme is easy to be implemented with present experimental techniques.

参考文献

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吴奇成, 夏岩. 基于绝热捷径的两原子相位门设计[J]. 量子光学学报, 2017, 23(2): 122. WU Qi-cheng, XIA Yan. Construct Shortcuts to Adiabatic Passage for the Implementation of Phase Gates in a Two-atom System[J]. Acta Sinica Quantum Optica, 2017, 23(2): 122.

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