Towards Photon-Number-Encoded High-dimensional Entanglement from a Sequentially Excited Quantum Three-Level System
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arXiv
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| Format: | Preprint |
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2024
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| author | Vajner, Daniel A. Kewitz, Nils D. von Helversen, Martin Wein, Stephen C. Karli, Yusuf Kappe, Florian Remesh, Vikas da Silva, Saimon F. Covre Rastelli, Armando Weihs, Gregor Anton-Solanas, Carlos Heindel, Tobias |
| author_facet | Vajner, Daniel A. Kewitz, Nils D. von Helversen, Martin Wein, Stephen C. Karli, Yusuf Kappe, Florian Remesh, Vikas da Silva, Saimon F. Covre Rastelli, Armando Weihs, Gregor Anton-Solanas, Carlos Heindel, Tobias |
| contents | The sequential resonant excitation of a 2-level quantum system results in the emission of a state of light showing time-entanglement encoded in the photon-number-basis - notions that can be extended to 3-level quantum systems as discussed in a recent proposal. Here, we report the experimental implementation of a sequential two-photon resonant excitation process of a solid-state 3-level system, constituted by the biexciton-, exciton-, and ground-state of a semiconductor quantum dot. The resulting light state exhibits entanglement in time and energy, encoded in the photon-number basis, which could be used in quantum information applications, e.g., dense information encoding or quantum communication protocols. Performing energy- and time-resolved correlation experiments in combination with extensive theoretical modelling, we are able to partially retrieve the entanglement structure of the generated state. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2407_05902 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Towards Photon-Number-Encoded High-dimensional Entanglement from a Sequentially Excited Quantum Three-Level System Vajner, Daniel A. Kewitz, Nils D. von Helversen, Martin Wein, Stephen C. Karli, Yusuf Kappe, Florian Remesh, Vikas da Silva, Saimon F. Covre Rastelli, Armando Weihs, Gregor Anton-Solanas, Carlos Heindel, Tobias Quantum Physics Mesoscale and Nanoscale Physics Optics The sequential resonant excitation of a 2-level quantum system results in the emission of a state of light showing time-entanglement encoded in the photon-number-basis - notions that can be extended to 3-level quantum systems as discussed in a recent proposal. Here, we report the experimental implementation of a sequential two-photon resonant excitation process of a solid-state 3-level system, constituted by the biexciton-, exciton-, and ground-state of a semiconductor quantum dot. The resulting light state exhibits entanglement in time and energy, encoded in the photon-number basis, which could be used in quantum information applications, e.g., dense information encoding or quantum communication protocols. Performing energy- and time-resolved correlation experiments in combination with extensive theoretical modelling, we are able to partially retrieve the entanglement structure of the generated state. |
| title | Towards Photon-Number-Encoded High-dimensional Entanglement from a Sequentially Excited Quantum Three-Level System |
| topic | Quantum Physics Mesoscale and Nanoscale Physics Optics |
| url | https://arxiv.org/abs/2407.05902 |