Shi S, Wang Y, Yang W, Zheng Y, Peng K. Detection and perfect fitting of 13.2 dB squeezed vacuum states by considering green-light-induced infrared absorption.
OPTICS LETTERS 2018;
43:5411-5414. [PMID:
30383020 DOI:
10.1364/ol.43.005411]
[Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/17/2018] [Accepted: 10/09/2018] [Indexed: 06/08/2023]
Abstract
We report on a high-level squeezed vacuum state with maximum quantum noise reduction of 13.2 dB directly detected at the pump power of 180 mW. The pump power dependence of the squeezing factor is experimentally exhibited. When considering only loss and phase fluctuation, the fitting results have a large deviation from the measurement value near the threshold. By integrating green-light-induced infrared absorption (GLIIRA) loss, the squeezing factor can be perfectly fitted in the whole pump power range. The result indicates that GLIIRA loss should be thoroughly considered and quantified in the generation of high-level squeezed states.
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