  Theoretical results are presented which show that noiseless phase quadrature
amplification is possible, and limited experimentally only by the efficiency of
the phase detection system. Experimental results obtained using a Nd:YAG laser
show a signal gain of 10dB and a signal transfer ratio of T_s=0.9. This result
easily exceeds the standard quantum limit for signal transfer. The results also
explicitly demonstrate the phase sensitive nature of the amplification process.
