利用相干态估计Fock态线性光学演化

IF 4.2 Q2 QUANTUM SCIENCE & TECHNOLOGY AVS quantum science Pub Date : 2023-03-01 DOI:10.1116/5.0136828
A. Lund
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引用次数: 1

摘要

本文提出了用相干态线性干涉仪模拟玻色子Fock态干涉的两种方法。第一种方法重复干涉仪,在特定模式中注入相干态,并使用输出的对称组合来重建fock态干涉的状态振幅。第二种方法构建了一种新的干涉仪,该干涉仪可以在单个输入上探测相干状态以提取所需的状态幅值。这里的两种方法明确地显示了经典计算困难出现的地方。在第一种方法中,计算硬度是在测量后处理中,而在第二种方法中,它是在所需状态演化的构建中。
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Estimating Fock-state linear optics evolution using coherent states
This paper presents two methods for simulating the interference of bosonic Fock states through linear interferometers using coherent states. The first method repeats the interferometer, injects coherent states in particular modes, and uses symmetric combinations of the outputs to reconstruct the state amplitudes of the Fock-state interference. The second method constructs a new interferometer that can be probed with coherent states on individual inputs to extract the required state amplitudes. The two approaches here show explicitly where the classical computational difficultly arises. In the first approach, the computational hardness is in the measurement post-processing, and in the second approach, it is within the construction of the required state evolution.
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CiteScore
9.90
自引率
0.00%
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