  We design and demonstrate on-chip homodyne detection operating in the quantum
regime, i.e. able to detect genuine nonclassical features. Our setup exploits a
glass-integrated homodyne analyzer (IHA) entirely fabricated by femtosecond
laser micromachining. The IHA incorporates on the same chip a balanced
waveguide beam splitter and a thermo-optic phase shifter, allowing us to record
homodyne traces at different phases and to perform reliable quantum state
tomography. In particular, we show that the IHA allows for the detection of
nonclassical features of continuous-variable quantum states, such as squeezed
states.
