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DOE OSTI · 2507482

Bi-chromatic intensity squeezing using four-wave mixing in 85 Rb vapor

Niu, Ziqi [College of William and Mary, Williamsburg, VA (United States)] (ORCID:0009000783405618)·Wen, Jianming [Binghamton University, NY (United States)] (ORCID:0000000333737108)·Zhang, Chuanwei [Washington University in St. Louis, MO (United States)]·Du, Shengwang [The University of Texas at Dallas, Richardson, TX (United States); Purdue University, West Lafayette, IN (United States)] (ORCID:0000000271744571)·Novikova, Irina [College of William and Mary, Williamsburg, VA (United States)] (ORCID:0000000184339092)
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Abstract

We experimentally investigate four-wave mixing (FWM) in a diamond interaction scheme using 85 Rb vapor, and identify the optimal conditions for joint amplification and relative intensity squeezing of two optical fields: one near the 85 Rb D1 optical transition (λ = 794.6 nm) and the other in the telecom O-band (λ = 1324 nm). We achieved a reduction of relative intensity noise by up to 2.6 ± 0.4 dB compared with the shot noise level, signifying the non-classical quantum correlations. The observed level of intensity squeezing is primarily limited by the available pump laser power, which constrains the achievable FWM gain. Numerical simulations show good agreement with the experimental results.

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74 ATOMIC AND MOLECULAR PHYSICSFour-wave mixingSqueezing

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Niu, Ziqi [College of William and Mary, Williamsburg, VA (United States)] (ORCID:0009000783405618), Wen, Jianming [Binghamton University, NY (United States)] (ORCID:0000000333737108), Zhang, Chuanwei [Washington University in St. Louis, MO (United States)], Du, Shengwang [The University of Texas at Dallas, Richardson, TX (United States); Purdue University, West Lafayette, IN (United States)] (ORCID:0000000271744571), Novikova, Irina [College of William and Mary, Williamsburg, VA (United States)] (ORCID:0000000184339092). 2025-01-31. Bi-chromatic intensity squeezing using four-wave mixing in 85 Rb vapor. https://doi.org/10.1364/opticaq.545134

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