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arXiv 2201.03553quant-ph
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用薛定谔猫多模态研究宏观量子态叠加态的退相干

Study of decoherence of a superposition of macroscopic quantum states by means the consideration of a multimode state of a Schrodinger cat

D. V. Fastovets, Yu. I. Bogdanov, N. A. Bogdanova, V. F. Lukichev

摘要:

量子薛定谔猫态在量子通信和量子光学中有着重要的意义。这些状态被用于各种科学领域,例如量子计算、量子纠错和高精度测量。对薛定谔猫态相干性的分析是其完全实用化的一项重要任务。我们开发的方法使得可以估计任意维度的量子薛定谔猫态的相干性,以及找到状态的干涉可见性-一个重要的光学特性。所获得的简单的定量关系的相干性和施密特数,以及开发的方法减少多维量子猫态的双模模拟,使我们能够分析宏观状态形成的大量的模式。给出了多模系统某些模式测量后产生的约化态的几个显式公式。研究结果对发展高维量子信息处理系统具有重要的应用价值。

英文摘要:

Quantum Schrodinger cat states are of great interest in quantum communications and quantum optics. These states are used in various scientific fields such as quantum computing, quantum error correction and high-precision measurements. The analysis of the Schrodinger cat states coherence is an important task for their complete practical application. Our developed approach makes it possible to estimate the coherence of the quantum Schrodinger cat state of arbitrary dimension, as well as to find the interference visibility of the state - an important optical characteristic. The obtained simple quantitative relationship between coherence and the Schmidt number, as well as the developed approach of reducing the multidimensional quantum cat state to a two-mode analog allow us to analyze macroscopic states formed by a large number of modes. Several explicit formulas for the reduced states that arise after measuring of some modes of the considered multimode system are obtained. The research results have significant application and can be used in the development of high-dimensional quantum information processing systems.

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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