  Squeezed light sources, featuring significant degrees of squeezing, flexible
time-frequency attributes, and a compact salable form factor, serve as crucial
building blocks in an expanding range of applications, spanning from quantum
computing to quantum sensing and communications. In this study, we introduce
and demonstrate a novel approach to generating squeezed light that exclusively
employs standard telecommunication fiber-optic components. The technique
leverages the entanglement properties of spontaneous four-wave mixing (SFWM) to
generate high squeezing with flexible time-frequency properties. Notably, a
record squeezing of 7.5 \(\pm\)0.1 dB is measured within an all-fiber,
all-guided-wave platform. The entanglement-assisted squeezing methodology
empowers the attainment of squeezing for arbitrary time-frequency modes within
the SFWM phase-matching bandwidth, extending beyond coherent laser modes, for
the first time. In particular, we measured 5.1 dB and 1.1 dB squeezing on
partially coherent and chaotic time-frequency modes that are defined by
randomly modulated laser sources and filtered amplified spontaneous emission
light, respectively.
