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10 April 2023 Experimental verification of the Gaussian quantum correlation measure in continuous variable systems
Li Zeng, Chensheng Wang, Lu Ding, Chuan Tian, Hui Yu
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Proceedings Volume 12614, 14th International Photonics and Optoelectronics Meetings (POEM 2022); 126140A (2023) https://doi.org/10.1117/12.2672859
Event: 14th International Photonics and Optoelectronics Meeting (POEM 2022), 2022, Wuhan, China
Abstract
The presence of quantum correlations in composite quantum systems is one of the main features of quantum mechanics. However, by now, all known quantifications of this correlation for continuous-variable systems are very difficult to compute. Therefore, it makes sense to find simpler and computable quantifications of Gaussian quantum correlations. Recently, a computable Gaussian quantum correlation M is proposed, which can be obtained based on the covariance matrix. Here, we experimentally demonstrate the Gaussian quantum correlation 𝑀 based on the two-mode entangled state carrying orbital angular momentum (OAM) generated from a four-wave mixing process in a hot Cesium atom vapor cell and investigate the evolution of such correlation in the lossy channel. Our results show that quantum correlation 𝑀 is robust in the lossy channel.
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Li Zeng, Chensheng Wang, Lu Ding, Chuan Tian, and Hui Yu "Experimental verification of the Gaussian quantum correlation measure in continuous variable systems", Proc. SPIE 12614, 14th International Photonics and Optoelectronics Meetings (POEM 2022), 126140A (10 April 2023); https://doi.org/10.1117/12.2672859
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KEYWORDS
Quantum correlations
Quantum experiments
Entangled states
Quantum channels
Quantum systems
Curium
Quantum discord
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