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arXiv · 1904.06060

Entanglement of a cavity light produced by a superposed two-mode coherent and subharmonic light

Menwuyelet Melaku·Deribe Hirpo
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Abstract

With the aid of the solutions of the Quantum Langevin equations, we have calculated the Q-functions for the two-mode coherent and subharmonic cavity light beams. We have then determined the Q-function for the superposed two-mode coherent and subharmonic cavity light beams. With the help of the pertinent Q-functions for cavity light beams, we determined the photon statistics, quadrature statistics, and entanglement. we have obtained that the superposed two-mode coherent and subharmonic cavity light beams are in a squeezed state and the squeezing occurs in the plus quadrature. Besides, our analysis shows that at steady state and at threshold, the superposed two-mode coherent and subharmonic light beams have a maximum squeezing of $25\%$ below the two-mode vacuum-state level. We have also clearly shown that the superposed two-mode light beam is entangled at steady-state and threshold and the entanglement turned out to be observed in the highly correlated squeezed photons with $75\%$ degree of entanglement.

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Menwuyelet Melaku, Deribe Hirpo. 2019-04-12. Entanglement of a cavity light produced by a superposed two-mode coherent and subharmonic light. https://arxiv.org/abs/1904.06060

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