EleonoraCapocasa - 08:52, Thursday 30 January 2020 (2006)
Frequency dependent squeezing below shot noise at 70-100 Hz
[Aritomi, Yuhang, Raffaele, Matteo, Eleonora]
I did a quick fitting of the FDS measuremnt we did last friday (24/01).
We have about 1 dB of FDS sqz at low frequency and 3.5 dB at high frequency.
We see that at some point during the measurement the detuning changed from ~100 Hz to ~70 Hz.
Sqz degradation paramenters used for the fit:
sqz_dB = 8; % produced SQZ
L_rt = 150e-6; % FC losses
L_inj = 0.20; % Injection losses
L_ro = 0.11; % Readout losses
A0 = 0.05; % Squeezed field/filter cavity mode mismatch losses
C0 = 0.05; % Squeezed field/local oscillator mode mismatch losses
ERR_L = 8.8e-12; % Lock accuracy [m]
ERR_csi = 80e-3; % Phase noise[rad]
Images attached to this report
