  We experimentally demonstrate intensity amplification of repetitive
picosecond optical pulses with an input-to-output gain up to 5.5 dB using a
passive Talbot amplifier. Through the dispersion-induced temporal Talbot
effect, the amplifier uses electro-optic phase modulation and a low-loss
dispersive medium to exploit and coherently redistribute the energy of the
original pulse train into fewer, replica, amplified pulses. In addition, we
show how our passive amplifier mitigates the pulse train timing-jitter and
pulse-to-pulse intensity fluctuations above a specific cutoff frequency.
