Reducing the mode-mismatch noises in atom–light interactions via optimization of the temporal waveform

Xiaotian Feng; Zhifei Yu; Bing Chen; Shuying Chen; Yuan Wu; Donghui Fan; Chun-Hua Yuan; L. Q. Chen; Z. Y. Ou; Weiping Zhang

doi:doi:10.1364/PRJ.400708

Photonics Research, 2020, 8 (11): 11001697, Published Online: Oct. 19, 2020

Reducing the mode-mismatch noises in atom–light interactions via optimization of the temporal waveform Download： 617次

Xiaotian Feng ¹Zhifei Yu ¹Bing Chen ²Shuying Chen ¹Yuan Wu ¹Donghui Fan ¹Chun-Hua Yuan ^1,5,*L. Q. Chen ^1,6,*Z. Y. Ou ³Weiping Zhang ⁴

Author Affiliations

¹ State Key Laboratory of Precision Spectroscopy, Quantum Institute for Light and Atoms, Department of Physics, East China Normal University, Shanghai 200062, China

² School of Electronic Science and Applied Physics, Hefei University of Technology, Hefei 230009, China

³ Department of Physics, Indiana University-Purdue University Indianapolis, Indianapolis, Indiana 46202, USA

⁴ School of Physics and Astronomy, and Tsung-Dao Lee Institute, Shanghai Jiao Tong University, Shanghai 200240, China

⁵ e-mail: chyuan@phy.ecnu.edu.cn

⁶ e-mail: lqchen@phy.ecnu.edu.cn

Figures & Tables

Fig. 1. (a) Schematic of the experimental setup. PBS, polarized beam splitter; HWP, half-wave plate; EOM, electro-optic modulator; AOM, acousto-optic modulator; PD, photodetector; AWG, arbitrary wave generator; DPO, digital phosphor oscilloscope. (b) Energy levels of the Rb87 atom and the frequencies of the lasers: |g,m⟩, hyperfine levels |52S1/2,F=1,F=2⟩; |e1,e2⟩, hyperfine levels |52P1/2,F=2⟩ and |52P3/2⟩; W, the Raman pump field; a^in, the initial input Stokes seed; a^out, the output Stokes field via SRS; OP, the optical pumping; S^, the atomic spin wave; R, the read field; b^out, the output anti-Stokes field by the reading process.

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Fig. 2. Iteration diagram. a^in,a^in(1),…,a^in(i) are normalized initially input Stokes seeds; a^out,a^out(1),…,a^out(i) are output signals by SRS, corresponding to the ith iteration.

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Fig. 3. (a) and (b) a^in is the initially input seed waveform and a^out(0) is the corresponding output signal of SRS. a^out(1) is the output signal of SRS in the first round, a^out(1) is stable waveform after several iteration rounds. (c) Pink circles and green solid triangles are a^out(f) corresponding to different a^in in (a) and (b), respectively.

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Fig. 4. (a) and (b) The different energy fluctuations ΔEa^out(0) of a^out(0) and ΔEa^out(f) of a^out(f) during many measurement times. (c) E¯a^out is the average energy of the output Stokes field. Black square and red triangle curves are respective Var(E) for Ea^out(0) and Ea^out(f) both with 100 ns long square-W pulse.

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Fig. 5. Black square and red triangle curves are respective Var(EDiff) for a^out(0) and a^out(f) both with the square-W and square-R pulse acquired in the experiment.

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Xiaotian Feng, Zhifei Yu, Bing Chen, Shuying Chen, Yuan Wu, Donghui Fan, Chun-Hua Yuan, L. Q. Chen, Z. Y. Ou, Weiping Zhang. Reducing the mode-mismatch noises in atom–light interactions via optimization of the temporal waveform[J]. Photonics Research, 2020, 8(11): 11001697.

Reducing the mode-mismatch noises in atom–light interactions via optimization of the temporal waveform Download： 617次

Fig. 2. Iteration diagram. a^in,a^in(1),…,a^in(i) are normalized initially input Stokes seeds; a^out,a^out(1),…,a^out(i) are output signals by SRS, corresponding to the ith iteration.

Fig. 5. Black square and red triangle curves are respective Var(EDiff) for a^out(0) and a^out(f) both with the square-W and square-R pulse acquired in the experiment.

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Reducing the mode-mismatch noises in atom–light interactions via optimization of the temporal waveform Download： 617次

Fig. 2. Iteration diagram. a^in,a^in(1),…,a^in(i) are normalized initially input Stokes seeds; a^out,a^out(1),…,a^out(i) are output signals by SRS, corresponding to the ith iteration.

Fig. 5. Black square and red triangle curves are respective Var(EDiff) for a^out(0) and a^out(f) both with the square-W and square-R pulse acquired in the experiment.

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