Resource-efficient linear-optical generation of GHZ-like states
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arXiv
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| Auteurs principaux: | , , |
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| Format: | Preprint |
| Publié: |
2025
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| _version_ | 1866912692702281728 |
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| author | Fldzhyan, Suren A. Straupe, Stanislav S. Saygin, Mikhail Yu. |
| author_facet | Fldzhyan, Suren A. Straupe, Stanislav S. Saygin, Mikhail Yu. |
| contents | Heralded multi-photon entanglement generation is a central bottleneck for photonic quantum computing, where resource costs typically skyrocket with target size. We explore efficient methods for generating photon states with tunable entanglement, providing a flexible tool for quantum state engineering. We introduce a theoretical framework that has been numerically validated, demonstrating the capacity to generate GHZ-like states incrementally from non-logical intermediate states. We demonstrate that in certain scenarios $-$ such as reducing the resource cost for building large maximally entangled GHZ states $-$ these variable-entanglement states can outperform their fixed-entanglement counterparts. By adjusting intermediate states and optimizing interferometer schemes, we improve photon number cost efficiency of GHZ-like states generation. Our findings indicate that while not a universal solution, non-maximally entangled states offer practical advantages for specific photonic quantum information tasks. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2509_14794 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Resource-efficient linear-optical generation of GHZ-like states Fldzhyan, Suren A. Straupe, Stanislav S. Saygin, Mikhail Yu. Quantum Physics Heralded multi-photon entanglement generation is a central bottleneck for photonic quantum computing, where resource costs typically skyrocket with target size. We explore efficient methods for generating photon states with tunable entanglement, providing a flexible tool for quantum state engineering. We introduce a theoretical framework that has been numerically validated, demonstrating the capacity to generate GHZ-like states incrementally from non-logical intermediate states. We demonstrate that in certain scenarios $-$ such as reducing the resource cost for building large maximally entangled GHZ states $-$ these variable-entanglement states can outperform their fixed-entanglement counterparts. By adjusting intermediate states and optimizing interferometer schemes, we improve photon number cost efficiency of GHZ-like states generation. Our findings indicate that while not a universal solution, non-maximally entangled states offer practical advantages for specific photonic quantum information tasks. |
| title | Resource-efficient linear-optical generation of GHZ-like states |
| topic | Quantum Physics |
| url | https://arxiv.org/abs/2509.14794 |