Entangled Polariton States in the Visible and Mid-Infrared Spectral Ranges

• URL: http://arxiv.org/abs/2508.10809v1
• Date: Thu, 14 Aug 2025 16:30:33 GMT
• Title: Entangled Polariton States in the Visible and Mid-Infrared Spectral Ranges
• Authors: Vladislav Yu. Shishkov, Oleg Kotov, Darius Urbonas, Lee A. Rozema, Francisco J. Garcia-Vidal, Johannes Feist, Anton V. Zasedatelev,
• Abstract summary: Entanglement generation in polariton systems is constrained by high losses and decoherence.<n>We propose a conceptually different approach that uses optomechanical interactions, rather than polariton-polariton interactions, to generate entangled polaritons.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Entanglement generation in polariton systems is fundamentally constrained by high losses and decoherence, which typically outweigh polariton nonlinearities. Here, we propose a conceptually different approach that uses optomechanical interactions, rather than polariton-polariton interactions, to generate entangled polaritons. Our double-resonant scheme relies on strong exciton-phonon coupling, found in both inorganic and molecular semiconductors, enabling room-temperature generation of spectrally disparate photon pairs. The quantum coherent and delocalized nature of polariton states inside an optical cavity ensures efficient single-mode outcoupling and allows for unconditional quantum state preparation--not relying on any post-selection or projective measurements. When conditioned on exciton-polariton emission, single phonon-polariton states can be prepared that subsequently yield bright, heralded single-photon emission in the mid-IR. We introduce a double-resonant optomechanical platform that enables scalable, room-temperature quantum polaritonics without relying on conventional excitonic nonlinearities.

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