Dual opposing quadrature-PT symmetry

• URL: http://arxiv.org/abs/2405.15612v1
• Date: Fri, 24 May 2024 14:57:31 GMT
• Title: Dual opposing quadrature-PT symmetry
• Authors: Wencong Wang, Jacob Kokinda, Jiazhen Li, Qing Gu, Dongmei Liu, Jianming Wen,
• Abstract summary: Recent research on type-I quadrature parity-time (PT) symmetry, utilizing an open twin-beam system. Investigation into the correlation with the Einstein-Podolsky-Rosen criteria uncovers previously unexplored connections between PT symmetry and nonclassicality.
• Score: 3.9911464307919124
• License: http://creativecommons.org/licenses/by-nc-sa/4.0/
• Abstract: Our recent research on type-I quadrature parity-time (PT) symmetry, utilizing an open twin-beam system, not only enables observing genuine quantum photonic PT symmetry amid phase-sensitive amplification (PSA) and loss in the presence of Langevin noise but also reveals additional classical-to-quantum (C2Q) transitions in quadrature and relative-intensity noise fluctuations. In contrast to the previous setup, our exploration of an alternative system assuming no loss involves a type-II PSA-only scheme. This scheme facilitates dual opposing quadrature PT symmetry, offering a comprehensive and complementary comprehension of C2Q transitions and anti-Hermiticity-enhanced quantum sensing. Furthermore, our investigation into the correlation with the Einstein-Podolsky-Rosen criteria uncovers previously unexplored connections between PT symmetry and nonclassicality, as well as quantum entanglement within the continuous-variable framework.

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