Geodesic
Photon antibunching in sixth harmonic generation
Nanosistemy: fizika, himiâ, matematika, Tome 15 (2024) no. 2, pp. 170-183.

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We studied photon antibunching in the pump and the harmonic modes of the sixth harmonic generation process. The generalized interaction Hamiltonian is solved for several particular cases in the Heisenberg picture, and the possibility of observing photon antibunching is investigated using the short-time approximation technique. It is shown that the photon antibunching in the pump field depends on the number of pump photons, the interaction time, and the coupling of the field between the modes. With the same amount of pump photons, we deduced that third-order photon antibunching is more nonclassical than second- and first-order photon antibunching. In this process, the effect of photon antibunching is not seen in the harmonic mode over pump mode. It is shown that photon antibunching is more noticeable with shorter interaction times as the depth of nonclassicality increases and the second-order correlation function decreases. The first-order Hamiltonian interaction, which stimulates both pump and harmonic fields, is demonstrated to be more nonclassical than the second-order Hamiltonian interaction. It is clear that the coherent state, or vacuum state, of a pump field with a nonzero harmonic field creates photon clusters because the pump field causes interaction, which leads to bunching effects. It is interpreted that the degree of photon antibunching is maximum in the regions where the second correlation function is minimum. Photon antibunching has been shown to be one of the quantum properties of light.
Keywords: photon antibunching, higher-order antibunching, sixth harmonic generation, photon number operator, short-time approximation. 
@article{NANO_2024_15_2_a2,
     author = {Rupesh Singh and Dilip Kumar Giri},
     title = {Photon antibunching in sixth harmonic generation},
     journal = {Nanosistemy: fizika, himi\^a, matematika},
     pages = {170--183},
     publisher = {mathdoc},
     volume = {15},
     number = {2},
     year = {2024},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/NANO_2024_15_2_a2/}
}
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Rupesh Singh; Dilip Kumar Giri. Photon antibunching in sixth harmonic generation. Nanosistemy: fizika, himiâ, matematika, Tome 15 (2024) no. 2, pp. 170-183. http://geodesic.mathdoc.fr/item/NANO_2024_15_2_a2/