[Aritomi, Eleonora, Matteo]

 

We measured squeezing level at lower frequency. Injected green is 47 mW.

Attached figures show squeezing level at 100 kHz, 10 kHz, 5 kHz.

 

squeezing: 3 dB, anti-squeezing: 9 dB @ 100 kHz 

squeezing: 2 dB, anti-squeezing: 5 dB @   10 kHz

squeezing: 0 dB, anti-squeezing: 6 dB @     5 kHz 

 

Note that a spectrum analyzer we used (E4411B ESA-L) works above 9 kHz, so the result for 5 kHz could be wrong.