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PreprintCC BY 4.0arXiv

Localized Decoherence as a Constructive Tool: An Optical Simulation of Matter-Wave Interference

  • Hadis Torbatiyan
  • Bedir Halcı
  • Adrian Udovičić
  • Lara Ulčakar
  • Rainer Kaltenbaek
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Abstract

Decoherence is conventionally regarded as a detrimental process that suppresses quantum coherence and limits the performance of quantum technologies. Contrary to this view, we show that spatially localized decoherence can instead be exploited as an interferometric tool. Beyond its conceptual implications, localized decoherence provides a novel approach to prepare arbitrary macroscopic spatial superpositions for testing quantum physics with massive particles. We demonstrate the proof of principle by making use of the correspondence between optics and matter-waves through the equivalence of the respective propagation functions. By employing stochastic phase fields to the optical counterpart to model the decoherence, our experiments confirm the expected interference. The results establish localized decoherence as a resource for quantum state engineering.

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Cite

BibTeXRIS
BibTeX
@misc{torbatiyan2026localized,
  title = {{Localized Decoherence as a Constructive Tool: An Optical Simulation of Matter-Wave Interference}},
  author = {Hadis Torbatiyan and Bedir Halcı and Adrian Udovičić and Lara Ulčakar and Rainer Kaltenbaek},
  howpublished = {arXiv},
  year = {2026},
  month = oct,
  doi = {10.48550/arxiv.2609.25227},
  eprint = {2609.25227},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2609.25227},
  note = {CC BY 4.0},
}
RIS
TY  - UNPB
TI  - Localized Decoherence as a Constructive Tool: An Optical Simulation of Matter-Wave Interference
AU  - Hadis Torbatiyan
AU  - Bedir Halcı
AU  - Adrian Udovičić
AU  - Lara Ulčakar
AU  - Rainer Kaltenbaek
PY  - 2026
DA  - 2026/10/08
PB  - arXiv
DO  - 10.48550/arxiv.2609.25227
UR  - https://arxiv.org/abs/2609.25227
AB  - Decoherence is conventionally regarded as a detrimental process that suppresses quantum coherence and limits the performance of quantum technologies. Contrary to this view, we show that spatially localized decoherence can instead be exploited as an interferometric tool. Beyond its conceptual implications, localized decoherence provides a novel approach to prepare arbitrary macroscopic spatial superpositions for testing quantum physics with massive particles. We demonstrate the proof of principle by making use of the correspondence between optics and matter-waves through the equivalence of the respective propagation functions. By employing stochastic phase fields to the optical counterpart to model the decoherence, our experiments confirm the expected interference. The results establish localized decoherence as a resource for quantum state engineering.
ER  -