Spins extracted from fermionic states and their entanglement properties
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arXiv
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| Main Authors: | , , |
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| Format: | Preprint |
| Published: |
2025
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| _version_ | 1866918092397871104 |
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| author | Troiani, Filippo Secchi, Andrea Pittalis, Stefano |
| author_facet | Troiani, Filippo Secchi, Andrea Pittalis, Stefano |
| contents | We investigate the spin states obtained by extracting $n$ electrons from closed-shell fermionic states. A partition of the system is defined through the introduction of the extraction modes. We derive the expression of the $n$-body reduced density matrices, which represent the extracted spin states. We show that these states exhibit different forms of spin entanglement, whose detection is discussed in terms of the spin squeezing inequalities. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2505_09411 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Spins extracted from fermionic states and their entanglement properties Troiani, Filippo Secchi, Andrea Pittalis, Stefano Quantum Physics Mesoscale and Nanoscale Physics We investigate the spin states obtained by extracting $n$ electrons from closed-shell fermionic states. A partition of the system is defined through the introduction of the extraction modes. We derive the expression of the $n$-body reduced density matrices, which represent the extracted spin states. We show that these states exhibit different forms of spin entanglement, whose detection is discussed in terms of the spin squeezing inequalities. |
| title | Spins extracted from fermionic states and their entanglement properties |
| topic | Quantum Physics Mesoscale and Nanoscale Physics |
| url | https://arxiv.org/abs/2505.09411 |