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PreprintCC BY-NC-ND 4.0arXiv

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

  • Y. Sacha C. L. S.
  • G. C. Rickli
  • J. Dipold
  • R. A. Kögler
  • Paulo Nussenzveig
  • Nathália B. Tomazio
  • M. Martinelli
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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 Si3N4 micro-cavities, previously used for quantum state generation, and demonstrate that the dependence of this noise on the temperature is compatible with a coupling of the photonic chips to a thermal reservoir. The control of this noise source is a necessary condition for the efficient implementation of these devices as sources of entangled states in quantum networks.

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Cite

BibTeXRIS
BibTeX
@misc{l2026deleterious,
  title = {{Deleterious effect of photon-phonon coupling on microcavities in their application as quantum sources}},
  author = {Y. Sacha C. L. S. and G. C. Rickli and J. Dipold and R. A. Kögler and Paulo Nussenzveig and Nathália B. Tomazio and M. Martinelli},
  howpublished = {arXiv},
  year = {2026},
  month = sep,
  doi = {10.48550/arxiv.2607.21743},
  eprint = {2607.21743},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2607.21743},
  note = {CC BY-NC-ND 4.0},
}
RIS
TY  - UNPB
TI  - Deleterious effect of photon-phonon coupling on microcavities in their application as quantum sources
AU  - Y. Sacha C. L. S.
AU  - G. C. Rickli
AU  - J. Dipold
AU  - R. A. Kögler
AU  - Paulo Nussenzveig
AU  - Nathália B. Tomazio
AU  - M. Martinelli
PY  - 2026
DA  - 2026/09/25
PB  - arXiv
DO  - 10.48550/arxiv.2607.21743
UR  - https://arxiv.org/abs/2607.21743
AB  - 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 temperature is compatible with a coupling of the photonic chips to a thermal reservoir. The control of this noise source is a necessary condition for the efficient implementation of these devices as sources of entangled states in quantum networks.
ER  -