Deleterious effect of photon-phonon coupling on microcavities in their application as quantum sources

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arXiv:2607.21743v1 Announce Type: new Abstract: In quantum systems, the contact with the environment is detrimental to the purity of the state, thus limiting the practical use of entangled sources in quantum information applications. This loss of purity is observed in the form of additional noise in the tomography of the state. We investigate this noise dependence in $Si_3N_4$ micro-cavities, previously used for quantum state generation, and demonstrate that the dependence of this noise on the