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| Main Authors: | , , , |
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| Format: | Preprint |
| Published: |
2026
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2601.01519 |
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| _version_ | 1866914233058328576 |
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| author | Liang, Zijin Pan, Qiying Zou, Hong-Mei Bi, Chenrui |
| author_facet | Liang, Zijin Pan, Qiying Zou, Hong-Mei Bi, Chenrui |
| contents | Based on Ref.\cite{Riccardi A}, we investigate the entropy and variance squeezing of a V-type atom in a dissipative cavity, and discuss the influences of parameters including the spontaneously generated interference (SGI) ($θ$), the cavity-environment coupling ($γ_0/κ$) and the atom-cavity detuning ($Δ$) on the atomic squeezing by using different initial states. The results show that no squeezing of $S_y$ occurs under any condition and that variance squeezing of $S_x$ appears only when $Δ>0$. Entropy squeezing quantifies quantum fluctuations more precisely than variance squeezing. Moreover, the atomic squeezing of $S_x$ clearly depends on $θ$, $γ_0/κ$, $Δ$ and the initial state. These findings are meaningful for quantum information processing as an ultra-low-noise resource. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2601_01519 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Entropy and Variance Squeezing of V-type Atom in Dissipative Cavity Liang, Zijin Pan, Qiying Zou, Hong-Mei Bi, Chenrui Quantum Physics Based on Ref.\cite{Riccardi A}, we investigate the entropy and variance squeezing of a V-type atom in a dissipative cavity, and discuss the influences of parameters including the spontaneously generated interference (SGI) ($θ$), the cavity-environment coupling ($γ_0/κ$) and the atom-cavity detuning ($Δ$) on the atomic squeezing by using different initial states. The results show that no squeezing of $S_y$ occurs under any condition and that variance squeezing of $S_x$ appears only when $Δ>0$. Entropy squeezing quantifies quantum fluctuations more precisely than variance squeezing. Moreover, the atomic squeezing of $S_x$ clearly depends on $θ$, $γ_0/κ$, $Δ$ and the initial state. These findings are meaningful for quantum information processing as an ultra-low-noise resource. |
| title | Entropy and Variance Squeezing of V-type Atom in Dissipative Cavity |
| topic | Quantum Physics |
| url | https://arxiv.org/abs/2601.01519 |