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| Format: | Preprint |
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2023
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| Online Access: | https://arxiv.org/abs/2304.11373 |
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| _version_ | 1866909293779877888 |
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| author | Azuma, Hiroo |
| author_facet | Azuma, Hiroo |
| contents | In this paper, we investigate how to generate coherent squeezed like light using a nonlinear photonic crystal. Because the photonic crystal reduces the group velocity of the incident light, if it is composed of a material with a second-order nonlinear optical susceptibility $χ^{(2)}$, the interaction between the nonlinear material and the light passing through it strengthens and the quantum state of the emitted light is largely squeezed. Thus, we can generate a coherent squeezed like light with a resonating cavity in which the nonlinear photonic crystal is placed. This coherent squeezed like state is defined with the Lie-Trotter product formula and its mathematical expression is different from those of conventional coherent squeezed states. We show that we can obtain this coherent squeezed like state with a squeezing level $15.9$ dB practically by adjusting physical parameters for our proposed method. Feeding the squeezed light whose average number of photons is given by one or two into a beam splitter and splitting the flow of the squeezed light into a pair of entangled light beams, we estimate their entanglement quantitatively. This paper is a sequel to H. Azuma, J. Phys. D: Appl. Phys. 55, 315106 (2022). |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2304_11373 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Generation of a coherent squeezed like state defined with the Lie-Trotter product formula using a nonlinear photonic crystal Azuma, Hiroo Quantum Physics In this paper, we investigate how to generate coherent squeezed like light using a nonlinear photonic crystal. Because the photonic crystal reduces the group velocity of the incident light, if it is composed of a material with a second-order nonlinear optical susceptibility $χ^{(2)}$, the interaction between the nonlinear material and the light passing through it strengthens and the quantum state of the emitted light is largely squeezed. Thus, we can generate a coherent squeezed like light with a resonating cavity in which the nonlinear photonic crystal is placed. This coherent squeezed like state is defined with the Lie-Trotter product formula and its mathematical expression is different from those of conventional coherent squeezed states. We show that we can obtain this coherent squeezed like state with a squeezing level $15.9$ dB practically by adjusting physical parameters for our proposed method. Feeding the squeezed light whose average number of photons is given by one or two into a beam splitter and splitting the flow of the squeezed light into a pair of entangled light beams, we estimate their entanglement quantitatively. This paper is a sequel to H. Azuma, J. Phys. D: Appl. Phys. 55, 315106 (2022). |
| title | Generation of a coherent squeezed like state defined with the Lie-Trotter product formula using a nonlinear photonic crystal |
| topic | Quantum Physics |
| url | https://arxiv.org/abs/2304.11373 |