近日，伊朗伊斯法罕理工大学的Sepideh Ahmadi与加拿大卡尔加里大学的Vahid Salari等人合作，提出了一种高对比度无相互作用的量子成像新方法。相关成果已于2023年3月17日在国际权威学术期刊《物理评论A》上发表。
该研究将基于相关的量子成像技术与鬼成像技术的独特优势结合起来，提出了一种量子成像方案。研究表明，该方案可以在光子数量最少的情况下提供高对比度的成像，能有效地最小化热噪声并创建无背景的图像。研究人员预计这种方法可以在非侵入性和无害的方式下应用于光敏生物组织的成像。
据悉，量子成像技术相比传统成像方法，在超低照度水平下提供了增强的分辨率、对比度和精度。这些技术利用纠缠光子对的独特特性，其中两种技术引人注目：基于相关的量子成像技术可提高对低反射率物体的成像可见度，该物体受到过多的噪声和损耗影响；而无相互作用的鬼成像技术则允许用最少量的光子探测物体的存在。
附：英文原文
Title: High-contrast interaction-free quantum imaging method
Author: Sepideh Ahmadi, Erhan Saglamyurek, Shabir Barzanjeh, Vahid Salari
Issue&Volume: 2023/03/17
Abstract: Quantum imaging techniques offer enhanced resolution, contrast, and precision at ultralow illumination levels compared to traditional imaging approaches. Relying on the unique properties of entangled photon pairs, two of these techniques stand out: the correlation-based quantum imaging technique provides visibility enhancement in imaging of a low-reflectivity object which is subject to excessive noise and losses, while the interaction-free ghost imaging allows for probing the presence of an object with an ultimately low number of photons. Here we propose a quantum imaging scheme that combines the unique advantages of these two approaches. We show that this scheme offers high-contrast imaging of objects with a minimal number of photons that can minimize thermal noise efficiently and create background-free images. We anticipate that this approach can find application in the imaging of photosensitive biological tissues in a noninvasive and harm-free fashion.
DOI: 10.1103/PhysRevA.107.032611
Source: https://journals.aps.org/pra/abstract/10.1103/PhysRevA.107.032611
