Fractional-statistics-induced entanglement from Andreev-like tunneling
Abstract The role of anyonic statistics stands as a cornerstone in the landscape of topological quantum techniques. While recent years have brought forth encouraging and persuasive strides in detecting anyons, a significant facet remains unexplored, especially in view of connecting anyonic physics t...
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| Format: | Article |
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Nature Portfolio
2025-07-01
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| Series: | Nature Communications |
| Online Access: | https://doi.org/10.1038/s41467-025-61869-w |
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| author | Gu Zhang Pierre Glidic Frédéric Pierre Igor Gornyi Yuval Gefen |
| author_facet | Gu Zhang Pierre Glidic Frédéric Pierre Igor Gornyi Yuval Gefen |
| author_sort | Gu Zhang |
| collection | DOAJ |
| description | Abstract The role of anyonic statistics stands as a cornerstone in the landscape of topological quantum techniques. While recent years have brought forth encouraging and persuasive strides in detecting anyons, a significant facet remains unexplored, especially in view of connecting anyonic physics to quantum information platforms—whether and how entanglement can be generated by anyonic braiding. Here, we demonstrate that even when two anyonic subsystems (represented by anyonic beams) are connected only by electron tunneling, entanglement between them, manifesting fractional statistics, is generated. To demonstrate this physics, we rely on a platform where fractional quantum Hall edges are bridged by a quantum point contact that allows only transmission of fermions (so-called Andreev-like tunneling). This invokes the physics of two-beam collisions in an anyonic Hong-Ou-Mandel collider, accompanied by a process that we dub anyon-quasihole braiding. We define an entanglement pointer—a current-noise-based function tailored to quantify entanglement associated with quasiparticle fractional statistics. Our work, which exposes, both in theory and in experiment, entanglement associated with anyonic statistics and braiding, prospectively paves the way to the exploration of entanglement induced by non-Abelian statistics. |
| format | Article |
| id | doaj-art-01b281ff1b1944bea7160af61e17d4fe |
| institution | Kabale University |
| issn | 2041-1723 |
| language | English |
| publishDate | 2025-07-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Nature Communications |
| spelling | doaj-art-01b281ff1b1944bea7160af61e17d4fe2025-08-20T03:43:27ZengNature PortfolioNature Communications2041-17232025-07-011611910.1038/s41467-025-61869-wFractional-statistics-induced entanglement from Andreev-like tunnelingGu Zhang0Pierre Glidic1Frédéric Pierre2Igor Gornyi3Yuval Gefen4National Laboratory of Solid State Microstructures, School of Physics, Jiangsu Physical Science Research Center, Nanjing UniversityUniversité Paris-Saclay, CNRS, Centre de Nanosciences et de NanotechnologiesUniversité Paris-Saclay, CNRS, Centre de Nanosciences et de NanotechnologiesInstitute for Quantum Materials and Technologies, Karlsruhe Institute of TechnologyDepartment of Condensed Matter Physics, Weizmann Institute of ScienceAbstract The role of anyonic statistics stands as a cornerstone in the landscape of topological quantum techniques. While recent years have brought forth encouraging and persuasive strides in detecting anyons, a significant facet remains unexplored, especially in view of connecting anyonic physics to quantum information platforms—whether and how entanglement can be generated by anyonic braiding. Here, we demonstrate that even when two anyonic subsystems (represented by anyonic beams) are connected only by electron tunneling, entanglement between them, manifesting fractional statistics, is generated. To demonstrate this physics, we rely on a platform where fractional quantum Hall edges are bridged by a quantum point contact that allows only transmission of fermions (so-called Andreev-like tunneling). This invokes the physics of two-beam collisions in an anyonic Hong-Ou-Mandel collider, accompanied by a process that we dub anyon-quasihole braiding. We define an entanglement pointer—a current-noise-based function tailored to quantify entanglement associated with quasiparticle fractional statistics. Our work, which exposes, both in theory and in experiment, entanglement associated with anyonic statistics and braiding, prospectively paves the way to the exploration of entanglement induced by non-Abelian statistics.https://doi.org/10.1038/s41467-025-61869-w |
| spellingShingle | Gu Zhang Pierre Glidic Frédéric Pierre Igor Gornyi Yuval Gefen Fractional-statistics-induced entanglement from Andreev-like tunneling Nature Communications |
| title | Fractional-statistics-induced entanglement from Andreev-like tunneling |
| title_full | Fractional-statistics-induced entanglement from Andreev-like tunneling |
| title_fullStr | Fractional-statistics-induced entanglement from Andreev-like tunneling |
| title_full_unstemmed | Fractional-statistics-induced entanglement from Andreev-like tunneling |
| title_short | Fractional-statistics-induced entanglement from Andreev-like tunneling |
| title_sort | fractional statistics induced entanglement from andreev like tunneling |
| url | https://doi.org/10.1038/s41467-025-61869-w |
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