Quantum-Classical Boundary Engineering in Weak-to-Strong Measurements via Squeezed Vacua
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arXiv
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| Main Authors: | , , |
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| Format: | Preprint |
| Published: |
2025
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| _version_ | 1866909710421065728 |
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| author | Yuanbek, Janarbek Ma, Wen-Long Turek, Yusuf |
| author_facet | Yuanbek, Janarbek Ma, Wen-Long Turek, Yusuf |
| contents | This study establishes a post-selected von Neumann framework to regulate non-classical features of single-photon-subtracted squeezed vacuum (SPSSV) and two-mode squeezed vacuum (TMSV) states during weak-to-strong measurement transitions. By synergizing Wigner-Yanase skew information, Amplitude Squared (AS) squeezing, sum squeezing, and photon statistics, we demonstrate weak value amplification as a unified control mechanism for quantum properties. Phase-space analysis via the Husimi Kano Q function reveals a critical transition: as coupling strength increases, SPSSV and TMSV states evolve from quantum non-Gaussianity to classical single-peak separability, marking a quantum-classical boundary crossing. This critical point is validated as the optimal threshold for noise suppression and signal enhancement in quantum metrology. The work provides a tunable platform for quantum sensing and weak-signal detection technologies. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2507_21548 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Quantum-Classical Boundary Engineering in Weak-to-Strong Measurements via Squeezed Vacua Yuanbek, Janarbek Ma, Wen-Long Turek, Yusuf Quantum Physics This study establishes a post-selected von Neumann framework to regulate non-classical features of single-photon-subtracted squeezed vacuum (SPSSV) and two-mode squeezed vacuum (TMSV) states during weak-to-strong measurement transitions. By synergizing Wigner-Yanase skew information, Amplitude Squared (AS) squeezing, sum squeezing, and photon statistics, we demonstrate weak value amplification as a unified control mechanism for quantum properties. Phase-space analysis via the Husimi Kano Q function reveals a critical transition: as coupling strength increases, SPSSV and TMSV states evolve from quantum non-Gaussianity to classical single-peak separability, marking a quantum-classical boundary crossing. This critical point is validated as the optimal threshold for noise suppression and signal enhancement in quantum metrology. The work provides a tunable platform for quantum sensing and weak-signal detection technologies. |
| title | Quantum-Classical Boundary Engineering in Weak-to-Strong Measurements via Squeezed Vacua |
| topic | Quantum Physics |
| url | https://arxiv.org/abs/2507.21548 |