AI Article Synopsis
- Nondegenerate four-wave mixing (FWM) in hot alkali metal vapor, specifically cesium, is used to create quantum correlated twin beams with nonzero orbital angular momentum (OAM).
- The process generates two beams: an amplified probe beam and a conjugate beam, which have the same and opposite topological charge as the original seed beam, respectively.
- Additionally, FWM can function as a quantum beam splitter even in a nonamplifying regime, allowing for the production of OAM-carrying twin beams and enabling applications in quantum state engineering and imaging.
Article Abstract
Nondegenerate four-wave mixing (FWM) process based on a double-Λ scheme in hot alkali metal vapor is a versatile tool in quantum state engineering, quantum imaging, and quantum precision measurements. In this Letter, we investigate the generation of quantum correlated twin beams which carry nonzero orbital angular momentums (OAMs) based on the FWM process in hot cesium vapor. The amplified probe beam and the newly generated conjugate beam in the FWM process have the same and opposite topological charge as the seed beam, respectively. We also explore the FWM process operated in a nonamplifying regime where quantum correlated twin beams carrying OAMs can still be generated. In this regime, the FWM process plays the role of quantum beam splitter for the OAM of light; that is, a device that can split a coherent light beam carrying OAM into quantum-correlated twin beams carrying OAMs. More generally, our setup can be used as a quantum beam splitter of images.
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| http://dx.doi.org/10.1364/OL.44.002053 | DOI Listing |
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