Nonlinear SU(1,1) interferometers with an on-chip parametric amplifier

IF 3.5 2区物理与天体物理 Q2 PHYSICS, APPLIED

Applied Physics Letters Pub Date : 2025-04-23 DOI:10.1063/5.0261065

Yue Li, Xiaotian Zhu, Jianmin Wang, E. Y. B. Pun, S. T. Chu, Brent E. Little, Z. Y. Ou

引用次数: 0

Abstract

SU(1,1) interferometers use two active parametric amplifiers to replace passive beam splitters of traditional interferometers for wave splitting and superposition. These interferometers involve quantum entangled signal and idler fields and possess a number of advantages over traditional interferometers. Here, we investigate a variant of the SU(1,1) interferometer by using only one parametric amplifier but with either one or both of the signal and idler fields fed back to the same parametric amplifier. Such a geometry is used to accommodate an on-chip micro-ring optical parametric oscillator made of high-index silica glass. An interference fringe is observed, and quantum noise reduction of 4-dB due to destructive quantum interference is measured in the output off the chip. Such an integrated device has potential applications in on-chip precision phase sensing.

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带有片上参数放大器的非线性SU（1,1）干涉仪

SU（1,1）干涉仪采用两个有源参量放大器代替传统干涉仪的无源分束器进行分波和叠加。这些干涉仪涉及量子纠缠信号和空闲场，与传统干涉仪相比具有许多优点。在这里，我们研究了SU（1,1）干涉仪的一种变体，该干涉仪仅使用一个参数放大器，但信号和空闲场中的一个或两个都反馈到同一个参数放大器。这种几何结构用于容纳芯片上的微环光学参量振荡器，该振荡器由高折射率硅玻璃制成。观察到干涉条纹，并且在芯片输出中测量到由于破坏性量子干涉导致的4 db量子噪声降低。这种集成器件在片上精密相位传感方面具有潜在的应用前景。

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

Applied Physics Letters 物理-物理：应用

CiteScore

6.40

自引率

10.00%

发文量

1821

审稿时长

1.6 months

期刊介绍： Applied Physics Letters (APL) features concise, up-to-date reports on significant new findings in applied physics. Emphasizing rapid dissemination of key data and new physical insights, APL offers prompt publication of new experimental and theoretical papers reporting applications of physics phenomena to all branches of science, engineering, and modern technology. In addition to regular articles, the journal also publishes invited Fast Track, Perspectives, and in-depth Editorials which report on cutting-edge areas in applied physics. APL Perspectives are forward-looking invited letters which highlight recent developments or discoveries. Emphasis is placed on very recent developments, potentially disruptive technologies, open questions and possible solutions. They also include a mini-roadmap detailing where the community should direct efforts in order for the phenomena to be viable for application and the challenges associated with meeting that performance threshold. Perspectives are characterized by personal viewpoints and opinions of recognized experts in the field. Fast Track articles are invited original research articles that report results that are particularly novel and important or provide a significant advancement in an emerging field. Because of the urgency and scientific importance of the work, the peer review process is accelerated. If, during the review process, it becomes apparent that the paper does not meet the Fast Track criterion, it is returned to a normal track.