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| Main Authors: | , |
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| Format: | Preprint |
| Published: |
2025
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2502.12790 |
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| _version_ | 1866909631037571072 |
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| author | Li, Hai-Dong Chen, Wei |
| author_facet | Li, Hai-Dong Chen, Wei |
| contents | Entanglement of spin degree of freedom can drastically alter the orbital exchange symmetry of electrons, switching their bunching and antibunching behaviors and the resultant current correlations in the Hanbury-Brown-Twiss interferometry. Here, we investigate the exchange correlation of quasiparticles with entanglement encoded in the Nambu spinors, or the electron-hole degree of freedom. In contrast to the conventional correspondence between spin entanglement and current correlation, we find that singlet (triplet) entanglement of Nambu spinors results in suppressed (enhanced) current correlation. This effect arises because the charge degree of freedom itself encodes the entanglement. We propose implementing this phenomenon in the edge states of a quantum Hall system, where the entangled states of the Nambu spinors can be continuously tuned by gate voltages. Our study reveals a novel relationship between entanglement and charge correlations, offering an effective approach for detecting entanglement of Nambu spinors. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2502_12790 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Anomalous exchange correlation of quasiparticles with entangled Nambu spinors Li, Hai-Dong Chen, Wei Mesoscale and Nanoscale Physics Entanglement of spin degree of freedom can drastically alter the orbital exchange symmetry of electrons, switching their bunching and antibunching behaviors and the resultant current correlations in the Hanbury-Brown-Twiss interferometry. Here, we investigate the exchange correlation of quasiparticles with entanglement encoded in the Nambu spinors, or the electron-hole degree of freedom. In contrast to the conventional correspondence between spin entanglement and current correlation, we find that singlet (triplet) entanglement of Nambu spinors results in suppressed (enhanced) current correlation. This effect arises because the charge degree of freedom itself encodes the entanglement. We propose implementing this phenomenon in the edge states of a quantum Hall system, where the entangled states of the Nambu spinors can be continuously tuned by gate voltages. Our study reveals a novel relationship between entanglement and charge correlations, offering an effective approach for detecting entanglement of Nambu spinors. |
| title | Anomalous exchange correlation of quasiparticles with entangled Nambu spinors |
| topic | Mesoscale and Nanoscale Physics |
| url | https://arxiv.org/abs/2502.12790 |