We propose and realize a novel universal phase insensitive optical amplifier operating at the quantum limit in the low gain regime. The amplifier consists only of linear optics and detectors thus circumventing a nonlinear interaction.
© 2006 Optical Society of America
(140.0140) Lasers and laser optics : Lasers and laser optics
(140.4480) Lasers and laser optics : Optical amplifiers
(270.0270) Quantum optics : Quantum optics
(270.2500) Quantum optics : Fluctuations, relaxations, and noise
M. Sabuncu, V. Josse, N. Cerf, G. Leuchs, and U. L. Andersen, "Universal Optical Amplification Without a Nonlinearity," in Conference on Lasers and Electro-Optics/Quantum Electronics and Laser Science Conference and Photonic Applications Systems Technologies, Technical Digest (CD) (Optical Society of America, 2006), paper QFA5.