Squeezed-state enhanced two-frequency interferometry
- 1 October 1987
- journal article
- Published by Optica Publishing Group in Journal of the Optical Society of America B
- Vol. 4 (10), 1677-1682
- https://doi.org/10.1364/josab.4.001677
Abstract
Here an experiment is proposed to demonstrate squeezed-state enhanced interferometry. An interferometer employing differenced detection, in which the photodetectors have less than a unit quantum efficiency, is analyzed. In order to avoid low-frequency noise, a readout signal at frequency 2vs is generated at the detector by injecting coherent light having two frequency components v0 + vs, and v0 − vs, into one input port of the interferometer. In order to realize a significant sensitivity enhancement, squeezed light fed into the other input port must be squeezed at frequencies v0 ± vs and v0 ± 3vs.Keywords
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