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Noiseless phase quadrature amplification via an electro-optic feed-forward technique

By BC Buchler, EH Huntington and TC Ralph


Theoretical results are presented that 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 neodymium-doped yttrium aluminum garnet laser show a signal gain of 10 dB 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. [S1050-2947(99)01107-5]

Topics: Quantum, Signal, States
Year: 1999
DOI identifier: 10.1103/PhysRevA.60.529
OAI identifier: oai:espace.library.uq.edu.au:UQ:295238

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