Photonics Research, Volume. 10, Issue 3, 777(2022)
Deterministic distribution of orbital angular momentum multiplexed continuous-variable entanglement and quantum steering
Fig. 1. (a) Experimental setup for the generation and distribution of OAM multiplexed CV quantum entanglement and steering in a lossy or noisy channel. Pr, probe beam; Conj, conjugate beam;
Fig. 2. (a) and (b) Beam patterns of the OAM multiplexed CV entanglement for
Fig. 3. Dependence of PPT values of the OAM multiplexed CV entanglement on transmission efficiency
Fig. 4. Quantum steerabilities of OAM multiplexed CV entangled state distributed in a (a) lossy or (b) noisy channel. The excess noise shown in (b) is
Fig. 5. Detailed experimental schematic for distributing OAM multiplexed CV entanglement in a noisy channel. The lossy channel is realized by blocking the auxiliary beam. D-shaped mirrors (DMs) are utilized to combine or separate light beams with small distances. HWP, half-wave plate; PBS, polarization beam splitter; EOM, electro-optic modulator; VPP, vortex phase plate; GL, Glan-laser polarizer; GT, Glan–Thompson polarizer; Pr, probe beam; Conj, conjugate beam; AM, amplitude modulator; PM, phase modulator; M, mirror; DM, D-shaped mirror; PZT, piezoelectric ceramics; BS, 50:50 beam splitter; BHD, balanced homodyne detector; SA, spectrum analyzer.
Fig. 6. Measured quantum correlation noises for initially generated OAM multiplexed CV entangled states carrying topological charges (a)
Fig. 7. Images of OAM modes of the Pr beam and Conj beam generated from the FWM process. (a)
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Li Zeng, Rong Ma, Hong Wen, Meihong Wang, Jun Liu, Zhongzhong Qin, Xiaolong Su. Deterministic distribution of orbital angular momentum multiplexed continuous-variable entanglement and quantum steering[J]. Photonics Research, 2022, 10(3): 777
Category: Quantum Optics
Received: Sep. 10, 2021
Accepted: Jan. 28, 2022
Published Online: Mar. 1, 2022
The Author Email: Xiaolong Su (suxl@sxu.edu.cn)