Dual opposing quadrature-PT symmetry
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 an additional classical-to-quantum (C2Q) transition in 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 PT-enhanced quantum sensing with optimal performance in the symmetry unbroken region. Furthermore, our investigation into the quantum 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.
Authors
- Jianming Wen (ORCID: https://orcid.org/0000-0003-3373-7108)
- Qing Gu (ORCID: https://orcid.org/0000-0003-3855-3690)
- J. Li
- Jacob Kokinda
- Dongmei Liu (ORCID: https://orcid.org/0000-0003-3912-0950)
- Wencong Wang (ORCID: https://orcid.org/0000-0001-9578-209X)
Institutions
- Binghamton University (US)
- North Carolina State University (US)
- Kennesaw State University (US)
- South China Normal University (CN)
- Integrated Optoelectronics (Norway) (NO)
Publication Details
- Journal
- iScience
- Published
- 2024-12-25
- DOI
- https://doi.org/10.1016/j.isci.2024.111655
- Citations
- 1
- Primary Topic
- Quantum Mechanics and Non-Hermitian Physics
- Type
- article
- Field-Weighted Citation Impact
- 0.34
Funders
- National Science Foundation
- Innovative Research Group Project of the National Natural Science Foundation of China
- Key Technologies Research and Development Program of Anhui Province
- National Natural Science Foundation of China
- National Key Research and Development Program of China
- Basic and Applied Basic Research Foundation of Guangdong Province
- Division of Electrical, Communications and Cyber Systems