Gain Assisted Raman Induced Classical and Quantum Talbot Imaging

• Published in: Annalen der Physik 2024-03, Vol.536 (3), p.n/a
• Main Authors: Abbas, Muqaddar, Wenzhang, Liu, Zhang, Yong‐Chang, Cong, Nan, Zhang, Pei
• Format: Article
• Language: English
• Subjects: Cold atoms; Diffraction patterns; Imaging; lensless method; Light beams; Raman induced grating; Rubidium; Standing waves; Talbot effect; Talbot imaging
• ISSN: 0003-3804; 1521-3889
• DOI: 10.1002/andp.202300329

2D Raman generated classical and quantum Talbot imaging is proposed in a three‐level gain assisted system. First, a 2D Raman induced grating (RIG) will be constructed by modulating transmission function in the weak probe channel using a strong control standing wave field. Furthermore, RIG will diffract a probe field, by shining a probing light beam on an optically generated lattice within a rubidium vapor cell. This study uses gain assisted Raman medium [Nature 406, 277 (2000)] to examine classical and quantum Talbot imaging. In the case of Raman‐induced classical imaging, the diffraction pattern repeats itself at planes with integer multiple Talbot lengths. Additionally, by taking into account entangled photon pairs, the scenario of Raman‐induced quantum imaging is investigated. This study also looks at the RIG's amplitude and phase information with adjustable image size variation. As a result of the gain feature and zero absorption, this system is anticipated to be more suitable from the perspective of application. This analysis may pave the way for further research into the Talbot effect's nonlinear and quantum dynamical properties. Also, it provide a non‐destructive, lensless method for imaging very cold atoms or molecules. An experimentally feasible scheme for Raman induced classical and quantum Talbot imaging is investigated by constructing Raman induced grating in the probe channel. First, Raman induced grating is used that results in Fresnel near‐field technique that allows to construct classical Talbot imaging. In addition, this study considers entangled photon pairs and investigate the scenario of Raman induced quantum imaging. This analysis may pave the way for further research into the Talbot effect's and have applications in lensless imaging as well as quantum information processing.