Abstract
Ghost imaging is an imaging technique in which the image of an object is revealed only in the correlation measurement between two beams of light, whereas the individual measurements contain no imaging information. Here, we experimentally demonstrate storage and retrieval of ghost images in hot atomic rubidium vapor. Since ghost imaging requires (quantum or classical) multimode spatial correlation between two beams of light, our experiment shows that the spatially multimode correlation, a second-order correlation property of light, can indeed be preserved during the storage-retrieval process. Our work, thus, opens up new possibilities for quantum and classical two-photon imaging, all-optical image processing, and quantum communication.
Highlights
IntroductionDynamic and reversible storage of the optical field has great potential both in classical (alloptical signal and image processing, etc.) and quantum information (quantum communication, photonic quantum computing, etc.) One promising approach to achieve coherent storage of the optical field is based on electromagnetically-induced transparency (EIT) in which the propaga-
Dynamic and reversible storage of the optical field has great potential both in classical and quantum information One promising approach to achieve coherent storage of the optical field is based on electromagnetically-induced transparency (EIT) in which the propaga
By making use of the thermal ghost imaging scheme [20, 21] and the EIT light storage technique [3], we demonstrate experimentally that the ghost image can still be revealed in the second-order correlation measurement of the retrieved fields
Summary
Dynamic and reversible storage of the optical field has great potential both in classical (alloptical signal and image processing, etc.) and quantum information (quantum communication, photonic quantum computing, etc.) One promising approach to achieve coherent storage of the optical field is based on electromagnetically-induced transparency (EIT) in which the propaga-. By making use of the thermal ghost imaging scheme [20, 21] and the EIT light storage technique [3], we demonstrate experimentally that the ghost image can still be revealed in the second-order correlation measurement of the retrieved fields. This result establishes clearly that the transverse multimode correlation can survive the storage-retrieval process, enabling potential applications of quantum and classical correlation imaging
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