Chin. Phys. Lett.  2021, Vol. 38 Issue (8): 084201    DOI: 10.1088/0256-307X/38/8/084201
FUNDAMENTAL AREAS OF PHENOMENOLOGY(INCLUDING APPLICATIONS) |
Towards High-Dimensional Entanglement in Path: Photon-Source Produced from a Two-Dimensional Atomic Cloud
Shaoxing Liu1, Xuanying Lai1, Ce Yang1, and J. F. Chen1,2*
1State Key Laboratory of Precision Spectroscopy, School of Physics and Electronic Science, East China Normal University, Shanghai 200241, China
2Shenzhen Institute for Quantum Science and Engineering and Department of Physics, Southern University of Science and Technology, Shenzhen 518055, China
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Shaoxing Liu, Xuanying Lai, Ce Yang et al  2021 Chin. Phys. Lett. 38 084201
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Abstract A photon source with high-dimensional entanglement is able to bring increasing capacity of information in quantum communication. The dimensionality is determined by the chosen degree of freedom of the photons and is limited by the complexity of the physical systems. Here we propose a new type of high-dimensional entangled photon source, generated via path-indistinguishable scheme from a two-dimensional atomic cloud, which is prepared in a magneto-optical trap. To verify the photon source, we demonstrate experimentally the quantum state of the single photons heralded by its partner photon, with homodyne tomographic technology.
Received: 18 March 2021      Published: 02 August 2021
PACS:  14.70.Bh (Photons)  
  42.50.-p (Quantum optics)  
  42.50.Dv (Quantum state engineering and measurements)  
  42.50.Gy (Effects of atomic coherence on propagation, absorption, and Amplification of light; electromagnetically induced transparency and Absorption)  
Fund: Supported by the National Natural Science Foundation of China (Grant No. 12074171), the Guangdong Key Project (Grant No. 2019ZT08X324), the Guangdong Innovation Project (Grant No. 2019KTSCX160), and Guangdong Provincial Key Laboratory (Grant No. 2019B121203002).
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http://cpl.iphy.ac.cn/10.1088/0256-307X/38/8/084201       OR      http://cpl.iphy.ac.cn/Y2021/V38/I8/084201
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Shaoxing Liu
Xuanying Lai
Ce Yang
and J. F. Chen
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