Emission of time-ordered photon pairs from a single polaritonic Bogoliubov mode
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arXiv
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| Autores principales: | , , , , , , , , , , |
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| Formato: | Preprint |
| Publicado: |
2026
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| _version_ | 1866917194364878848 |
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| author | Claude, Ferdinand Zhou, Yueguang Ravets, Sylvain Bloch, Jacqueline Morassi, Martina Lemaître, Aristide Bramati, Alberto Minguzzi, Anna Carusotto, Iacopo Frérot, Irénée Richard, Maxime |
| author_facet | Claude, Ferdinand Zhou, Yueguang Ravets, Sylvain Bloch, Jacqueline Morassi, Martina Lemaître, Aristide Bramati, Alberto Minguzzi, Anna Carusotto, Iacopo Frérot, Irénée Richard, Maxime |
| contents | In many-body quantum systems, interactions drive the emergence of correlations that are at the heart of the most intriguing states of matter. A remarkable example is the case of weakly interacting bosonic systems, whose ground state is a squeezed vacuum state, and whose elementary excitations have a collective nature. In this work, we report on the direct observation of the peculiar microscopic quantum structure of these elementary excitations. We perform time- and frequency-resolved two-photon correlation measurements on the fluctuations of weakly interacting polaritons in a resonantly-driven microcavity, and observe that upon decreasing the average number of fluctuation quanta below unity, large pair correlations build up together with strong time-ordering of the emitted photons. This behavior is a direct signature of the particle-hole quantum superposition which is at the heart of Bogoliubov excitations. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2601_06468 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Emission of time-ordered photon pairs from a single polaritonic Bogoliubov mode Claude, Ferdinand Zhou, Yueguang Ravets, Sylvain Bloch, Jacqueline Morassi, Martina Lemaître, Aristide Bramati, Alberto Minguzzi, Anna Carusotto, Iacopo Frérot, Irénée Richard, Maxime Quantum Gases Quantum Physics In many-body quantum systems, interactions drive the emergence of correlations that are at the heart of the most intriguing states of matter. A remarkable example is the case of weakly interacting bosonic systems, whose ground state is a squeezed vacuum state, and whose elementary excitations have a collective nature. In this work, we report on the direct observation of the peculiar microscopic quantum structure of these elementary excitations. We perform time- and frequency-resolved two-photon correlation measurements on the fluctuations of weakly interacting polaritons in a resonantly-driven microcavity, and observe that upon decreasing the average number of fluctuation quanta below unity, large pair correlations build up together with strong time-ordering of the emitted photons. This behavior is a direct signature of the particle-hole quantum superposition which is at the heart of Bogoliubov excitations. |
| title | Emission of time-ordered photon pairs from a single polaritonic Bogoliubov mode |
| topic | Quantum Gases Quantum Physics |
| url | https://arxiv.org/abs/2601.06468 |