Noise reduction in quantum nondemolition measurement with a nonlinear Mach–Zehnder interferometer using squeezed vacuum
- 1 March 1991
- journal article
- Published by Optica Publishing Group in Journal of the Optical Society of America B
- Vol. 8 (3) , 681-684
- https://doi.org/10.1364/josab.8.000681
Abstract
A quantum nondemolition measurement of photon number taken with a nonlinear Mach–Zehnder interferometer is analyzed. When this interferometer is excited by a coherent input, it shows a large amount of noise, caused by the self-phase modulation. We demonstrate how this noise can be suppressed by applying a squeezed vacuum to the unexcited port of the interferometer.Keywords
This publication has 3 references indexed in Scilit:
- Squeezing performance of a nonlinear symmetric Mach–Zehnder interferometer using forward degenerate four-wave mixingJournal of the Optical Society of America B, 1991
- Observation of Squeezed States Generated by Four-Wave Mixing in an Optical CavityPhysical Review Letters, 1985
- Quantum nondemolition measurement of the photon number via the optical Kerr effectPhysical Review A, 1985