Extended Data Fig. 2: Measurements of the same signal for various laser powers.
From: Atomic superheterodyne receiver based on microwave-dressed Rydberg spectroscopy
In measuring the same signal, seven different choices of (Pp, Pc) for the powers of probe and control lasers are considered, indexed by i = 1, …, 7 in the horizontal axis of a and b. They are respectively (120 μW, 34 mW), (108 μW, 30 mW), (120 μW, 30 mW), (132 μW, 34 mW), (120 μW, 27 mW), (84 μW, 30 mW), (180 μW, 39 mW). Panel a presents measurements of ∣P(δs)∣ and ∣κ0∣ by atomic superhet, and panel b shows \({E}_{s}=[\hslash /(\sqrt{2}\ \mu )]| P({\delta }_{s})| /| {\kappa }_{0}|\). In panel a, the dark blue circle denotes single-shot measurement of ∣P(δs)∣. The light blue square depicts average ∣P(δs)∣ from 10 single-shot measurements with error bar indicating the 1σ standard error. All data of ∣P(δs)∣ has been normalized by the median of ∣P(δs)∣. The gray circle denotes single-shot measurement of ∣κ0∣. Average ∣κ0∣ from 3 measurements is shown (black square) with error bar denoting 1σ standard error. Data of ∣κ0∣ has been normalized by its median. In panel b, the red circle represents single-shot measurement of Es by atomic superhet, and the blue square depicts average Es from 10 measurements with error bar indicating the 1σ standard error. The same signal electric field is also measured using standard antenna method (dashed black line), and the light blue patch denotes measurement uncertainty in this method.
