Ghost imaging (GI) enables reconstruction of the image of an object by measuring the intensity correlation of two beams, neither of which independently carries the spatial characteristics of the object. By exploiting the space-time duality, GI has been extended from the spatial domain to the time domain, and has been successfully demonstrated in the optical regime. This article reports on the experimental demonstration of acoustic GI in the time domain. Using ultrasound instead of photons, we created high-quality ghost images of a temporal object, even in the presence of strong ambient noise. Our work offers a fresh approach for imaging disturbance-sensitive acoustic signals, and could open the gateway to identifying new approaches in acoustic sensing, dynamic imaging, and communications.

中文翻译：

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时域中的声鬼成像

重影成像（GI）通过测量两个光束的强度相关性来重建对象的图像，这两个光束都不独立地承载对象的空间特征。通过利用时空对偶性，GI已从空间域扩展到时域，并已在光学领域得到成功证明。本文报道了时空声学GI的实验演示。使用超声代替光子，即使存在强烈的环境噪声，我们也可以创建时间对象的高质量幻像。我们的工作为对干扰敏感的声信号进行成像提供了一种新方法，并且可能为在声学传感，动态成像和通信中识别新方法打开门户。