Photonics Research, Volume. 10, Issue 9, 2091(2022)
Tunable non-Hermiticity through reservoir engineering
Fig. 1. Schematics of the tunable non-Hermiticity through reservoir engineering. Each of the two spatially separated optical channels within the atomic-vapor cell, Ch1 and Ch2, contains collinearly propagating weak probe and strong control fields (with Rabi frequency of
Fig. 2. Characterization of the light wall. Illustration of typical EIT spectra with (blue) and without (red) the light wall, obtained from (a) experiment and (b) Monte-Carlo simulations. (c) Measured EIT center shift versus laser power, with red detuning of 6 GHz. (d) Measured EIT center shift versus laser detuning, with laser power of 24 mW.
Fig. 3. Measurement of the light-wall-induced phase shift in the atomic spin wave. Light power output from the interference between the control and probe fields in Ch1 and Ch2, respectively, with (a) light wall turned off, (b) light-wall power of 6 mW, and (c) light-wall power of 30 mW. The inferred phase shifts of the spin wave are 0,
Fig. 4. Beam splitter with tunable non-Hermiticity. Transmitted probe powers in Ch1 and Ch2, with input probes in both channels turned on, with (a) absence of the light wall, (b) light-wall power of 6 mW, and (c) light-wall power of 24 mW, displaying a phase lag between the two channels of about
Fig. 5. (a) Schematic illustration of the proposed three-channel model in Eq. (
Fig. 6. Measured EIT linewidth versus laser power of the control field. The line is a linear fit to guide the eye.
Fig. 7. (a) Experiment measurements of the phase saturation. Blue curve is the phase shift shown in Fig.
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Xin Meng, Zhiwei Hu, Xingda Lu, Wanxia Cao, Xichang Zhang, Haowei Li, Ying Hu, Wei Yi, Yanhong Xiao. Tunable non-Hermiticity through reservoir engineering[J]. Photonics Research, 2022, 10(9): 2091
Category: Quantum Optics
Received: Dec. 1, 2021
Accepted: May. 4, 2022
Published Online: Aug. 19, 2022
The Author Email: Yanhong Xiao (yxiao@sxu.edu.cn)