Bogoliubov Excitations Driven by Thermal Lattice Phonons in a Quantum Fluid of Light
The elementary excitations in weakly interacting quantum fluids have a nontrivial nature which is at the basis of defining quantum phenomena such as superfluidity. These excitations and the physics they lead to have been explored in closed quantum systems at thermal equilibrium both theoretically wi...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
American Physical Society
2023-12-01
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| Series: | Physical Review X |
| Online Access: | http://doi.org/10.1103/PhysRevX.13.041058 |
| _version_ | 1797375411798147072 |
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| author | Irénée Frérot Amit Vashisht Martina Morassi Aristide Lemaître Sylvain Ravets Jacqueline Bloch Anna Minguzzi Maxime Richard |
| author_facet | Irénée Frérot Amit Vashisht Martina Morassi Aristide Lemaître Sylvain Ravets Jacqueline Bloch Anna Minguzzi Maxime Richard |
| author_sort | Irénée Frérot |
| collection | DOAJ |
| description | The elementary excitations in weakly interacting quantum fluids have a nontrivial nature which is at the basis of defining quantum phenomena such as superfluidity. These excitations and the physics they lead to have been explored in closed quantum systems at thermal equilibrium both theoretically within the celebrated Bogoliubov framework and experimentally in quantum fluids of ultracold atoms. Over the past decade, the relevance of Bogoliubov excitations has become essential to understand quantum fluids of interacting photons. Their driven-dissipative character leads to distinct properties with respect to their equilibrium counterparts. For instance, the condensate coupling to the photonic vacuum environment leads to a nonzero generation rate of elementary excitations with many striking implications. In this work, considering that quantum fluids of light are often hosted in solid-state systems, we show within a joint theory-experiment analysis that the vibrations of the crystal constitute another environment that the condensate is fundamentally coupled to. This coupling leads to a unique heat transfer mechanism, resulting in a large generation rate of elementary excitations in typical experimental conditions, and to a fundamental nonzero contribution at vanishing temperatures. Our work provides a complete framework for solid-embedded quantum fluids of light, which is invaluable in view of achieving a regime dominated by photon-vacuum fluctuations. |
| first_indexed | 2024-03-08T19:22:56Z |
| format | Article |
| id | doaj.art-d8b981ed45644d6889f6d69d4f486edc |
| institution | Directory Open Access Journal |
| issn | 2160-3308 |
| language | English |
| last_indexed | 2024-03-08T19:22:56Z |
| publishDate | 2023-12-01 |
| publisher | American Physical Society |
| record_format | Article |
| series | Physical Review X |
| spelling | doaj.art-d8b981ed45644d6889f6d69d4f486edc2023-12-26T15:03:37ZengAmerican Physical SocietyPhysical Review X2160-33082023-12-0113404105810.1103/PhysRevX.13.041058Bogoliubov Excitations Driven by Thermal Lattice Phonons in a Quantum Fluid of LightIrénée FrérotAmit VashishtMartina MorassiAristide LemaîtreSylvain RavetsJacqueline BlochAnna MinguzziMaxime RichardThe elementary excitations in weakly interacting quantum fluids have a nontrivial nature which is at the basis of defining quantum phenomena such as superfluidity. These excitations and the physics they lead to have been explored in closed quantum systems at thermal equilibrium both theoretically within the celebrated Bogoliubov framework and experimentally in quantum fluids of ultracold atoms. Over the past decade, the relevance of Bogoliubov excitations has become essential to understand quantum fluids of interacting photons. Their driven-dissipative character leads to distinct properties with respect to their equilibrium counterparts. For instance, the condensate coupling to the photonic vacuum environment leads to a nonzero generation rate of elementary excitations with many striking implications. In this work, considering that quantum fluids of light are often hosted in solid-state systems, we show within a joint theory-experiment analysis that the vibrations of the crystal constitute another environment that the condensate is fundamentally coupled to. This coupling leads to a unique heat transfer mechanism, resulting in a large generation rate of elementary excitations in typical experimental conditions, and to a fundamental nonzero contribution at vanishing temperatures. Our work provides a complete framework for solid-embedded quantum fluids of light, which is invaluable in view of achieving a regime dominated by photon-vacuum fluctuations.http://doi.org/10.1103/PhysRevX.13.041058 |
| spellingShingle | Irénée Frérot Amit Vashisht Martina Morassi Aristide Lemaître Sylvain Ravets Jacqueline Bloch Anna Minguzzi Maxime Richard Bogoliubov Excitations Driven by Thermal Lattice Phonons in a Quantum Fluid of Light Physical Review X |
| title | Bogoliubov Excitations Driven by Thermal Lattice Phonons in a Quantum Fluid of Light |
| title_full | Bogoliubov Excitations Driven by Thermal Lattice Phonons in a Quantum Fluid of Light |
| title_fullStr | Bogoliubov Excitations Driven by Thermal Lattice Phonons in a Quantum Fluid of Light |
| title_full_unstemmed | Bogoliubov Excitations Driven by Thermal Lattice Phonons in a Quantum Fluid of Light |
| title_short | Bogoliubov Excitations Driven by Thermal Lattice Phonons in a Quantum Fluid of Light |
| title_sort | bogoliubov excitations driven by thermal lattice phonons in a quantum fluid of light |
| url | http://doi.org/10.1103/PhysRevX.13.041058 |
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