Quantum teleportation with dissimilar quantum dots over a hybrid quantum network
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arXiv
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| Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , , , |
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| Format: | Preprint |
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2024
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| author | Laneve, Alessandro Ronco, Giuseppe Beccaceci, Mattia Barigelli, Paolo Salusti, Francesco Claro-Rodriguez, Nicolas De Pascalis, Giorgio Suprano, Alessia Chiaudano, Leone Schöll, Eva Hanschke, Lukas Krieger, Tobias M. Buchinger, Quirin da Silva, Saimon F. Covre Neuwirth, Julia Stroj, Sandra Höfling, Sven Huber-Loyola, Tobias Castaneda, Mario A. Usuga Carvacho, Gonzalo Spagnolo, Nicolò Rota, Michele B. Basset, Francesco Basso Rastelli, Armando Sciarrino, Fabio Jöns, Klaus Trotta, Rinaldo |
| author_facet | Laneve, Alessandro Ronco, Giuseppe Beccaceci, Mattia Barigelli, Paolo Salusti, Francesco Claro-Rodriguez, Nicolas De Pascalis, Giorgio Suprano, Alessia Chiaudano, Leone Schöll, Eva Hanschke, Lukas Krieger, Tobias M. Buchinger, Quirin da Silva, Saimon F. Covre Neuwirth, Julia Stroj, Sandra Höfling, Sven Huber-Loyola, Tobias Castaneda, Mario A. Usuga Carvacho, Gonzalo Spagnolo, Nicolò Rota, Michele B. Basset, Francesco Basso Rastelli, Armando Sciarrino, Fabio Jöns, Klaus Trotta, Rinaldo |
| contents | Photonic quantum information processing in metropolitan quantum networks lays the foundation for cloud quantum computing [1, 2], secure communication [3, 4], and the realization of a global quantum internet [5, 6]. This paradigm shift requires on-demand and high-rate generation of flying qubits and their quantum state teleportation over long distances [7]. Despite the last decade has witnessed an impressive progress in the performances of deterministic photon sources [8-11], the exploitation of distinct quantum emitters to implement all-photonic quantum teleportation among distant parties has remained elusive. Here, we overcome this challenge by using dissimilar quantum dots whose electronic and optical properties are engineered by light-matter interaction [12], multi-axial strain [13] and magnetic fields [14] so as to make them suitable for the teleportation of polarization qubits. This is demonstrated in a hybrid quantum network harnessing both fiber connections and 270 m free-space optical link connecting two buildings of the University campus in the center of Rome. The protocol exploits GPS-assisted synchronization, ultra-fast single photon detectors as well as stabilization systems that compensate for atmospheric turbulence. The achieved teleportation state fidelity reaches up to 82+-1%, above the classical limit by more than 10 standard deviations. Our field demonstration of all-photonic quantum teleportation opens a new route to implement solid-state based quantum relays and builds the foundation for practical quantum networks. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2411_12387 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Quantum teleportation with dissimilar quantum dots over a hybrid quantum network Laneve, Alessandro Ronco, Giuseppe Beccaceci, Mattia Barigelli, Paolo Salusti, Francesco Claro-Rodriguez, Nicolas De Pascalis, Giorgio Suprano, Alessia Chiaudano, Leone Schöll, Eva Hanschke, Lukas Krieger, Tobias M. Buchinger, Quirin da Silva, Saimon F. Covre Neuwirth, Julia Stroj, Sandra Höfling, Sven Huber-Loyola, Tobias Castaneda, Mario A. Usuga Carvacho, Gonzalo Spagnolo, Nicolò Rota, Michele B. Basset, Francesco Basso Rastelli, Armando Sciarrino, Fabio Jöns, Klaus Trotta, Rinaldo Quantum Physics Mesoscale and Nanoscale Physics Materials Science Optics Photonic quantum information processing in metropolitan quantum networks lays the foundation for cloud quantum computing [1, 2], secure communication [3, 4], and the realization of a global quantum internet [5, 6]. This paradigm shift requires on-demand and high-rate generation of flying qubits and their quantum state teleportation over long distances [7]. Despite the last decade has witnessed an impressive progress in the performances of deterministic photon sources [8-11], the exploitation of distinct quantum emitters to implement all-photonic quantum teleportation among distant parties has remained elusive. Here, we overcome this challenge by using dissimilar quantum dots whose electronic and optical properties are engineered by light-matter interaction [12], multi-axial strain [13] and magnetic fields [14] so as to make them suitable for the teleportation of polarization qubits. This is demonstrated in a hybrid quantum network harnessing both fiber connections and 270 m free-space optical link connecting two buildings of the University campus in the center of Rome. The protocol exploits GPS-assisted synchronization, ultra-fast single photon detectors as well as stabilization systems that compensate for atmospheric turbulence. The achieved teleportation state fidelity reaches up to 82+-1%, above the classical limit by more than 10 standard deviations. Our field demonstration of all-photonic quantum teleportation opens a new route to implement solid-state based quantum relays and builds the foundation for practical quantum networks. |
| title | Quantum teleportation with dissimilar quantum dots over a hybrid quantum network |
| topic | Quantum Physics Mesoscale and Nanoscale Physics Materials Science Optics |
| url | https://arxiv.org/abs/2411.12387 |