Abstract
We investigated theoretically the squeezing, sub-Poissonian, and total noise of a quantum state in spontaneous and stimulated five-wave interaction process under short-time approximation. It has been found that the squeezing occurs in field amplitude, amplitude-squared in the fundamental mode in the process. It is shown that higher-order squeezing allows a much larger fractional noise reduction than lower-order squeezing. We observed that the squeezed states are associated with a large number of photons. It is shown that squeezing is greater in the stimulated interaction than the corresponding squeezing in the spontaneous interaction. The photon statistics of the fundamental mode in the process is investigated and found to be sub-Poissonian in nature. The effect of the sub-Poissonian nature of an optical field in terms of total noise is also incorporated. We showed that the depth of nonclassicality directly depends on the amount of total noise present in the system. This suggests that the more squeezed the state is, the greater is its total noise in the system. It is found that a higher multi-photon absorption process is suitable for the generation of optimum squeezed light.
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Kumar, S., Giri, D.K. Nonclassical states and total noise in five-wave interaction process. J Opt 49, 549–555 (2020). https://doi.org/10.1007/s12596-020-00657-9
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DOI: https://doi.org/10.1007/s12596-020-00657-9