Yaochin and Yuhang
We see anti-squeezing rotates to squeezing @2kHz. But the filter cavity was really unstable.
average: 50 times
Setting of hand-fit parameters:
sqz_dB = 9.5; % produced SQZ
L_rt = 105e-6; % FC losses
L_inj = 0.17; % Injection losses
L_ro = 0.1; % Readout losses
A0 = 0.05; % Squeezed field/filter cavity mode mismatch losses
C0 = 0.03; % Squeezed field/local oscillator mode mismatch losses
ERR_L = 5e-12; % Lock accuracy [m]
ERR_csi = 50e-3; % Phase noise[rad]
phi_Hom = [-1/180*pi, -11/180*pi, -75/180*pi]; % Homodyne angle [rad] (you can input a vector of values)
det = 2e3; % detuning frequency
int = 0.8e3; % frequency range = det+/-int
Setting of shot noise level/detuning error parameters:
semilogx(fd+34, d_a1+133.5,'k','LineWidth',3) %squeezing to anti-squeezing
hold on
semilogx(fd+32, d_a2+133.5,'LineWidth',3) %anti-squeezing to squeezing
hold on
semilogx(fd+150, d_a3+133.5,'LineWidth',3) %intermediate