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PreprintarXiv licencearXiv

Experimental quantification of quantum coherence for a set of quantum states

  • Tianle Zheng
  • Liangsheng Li
  • Wenting Zhou
  • Chengjie Zhang
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Abstract

We present a direct experimental verification of quantum coherence for a set of quantum states in a basis-independent manner. We find that the theory of quantum coherence for a set of quantum states matches our experimental results perfectly and can be applied to protocols like BB84 and quantum secure direct communication. Using a Sagnac interferometer, we experimentally quantify the quantum coherence for two sets of experimental states. Moreover, we introduce a novel application of set coherence, illustrating that the states employed in the BB84 protocol exhibit maximal set coherence. Our results pave the way for wider applications of quantum coherence for a set of quantum states, including quantum key distribution protocols and probabilistic quantum cloning.

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Cite

BibTeXRIS
BibTeX
@misc{zheng2026experimental,
  title = {{Experimental quantification of quantum coherence for a set of quantum states}},
  author = {Tianle Zheng and Liangsheng Li and Wenting Zhou and Chengjie Zhang},
  howpublished = {arXiv},
  year = {2026},
  month = oct,
  doi = {10.48550/arxiv.2610.01227},
  eprint = {2610.01227},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2610.01227},
}
RIS
TY  - UNPB
TI  - Experimental quantification of quantum coherence for a set of quantum states
AU  - Tianle Zheng
AU  - Liangsheng Li
AU  - Wenting Zhou
AU  - Chengjie Zhang
PY  - 2026
DA  - 2026/10/01
PB  - arXiv
DO  - 10.48550/arxiv.2610.01227
UR  - https://arxiv.org/abs/2610.01227
AB  - We present a direct experimental verification of quantum coherence for a set of quantum states in a basis-independent manner. We find that the theory of quantum coherence for a set of quantum states matches our experimental results perfectly and can be applied to protocols like BB84 and quantum secure direct communication. Using a Sagnac interferometer, we experimentally quantify the quantum coherence for two sets of experimental states. Moreover, we introduce a novel application of set coherence, illustrating that the states employed in the BB84 protocol exhibit maximal set coherence. Our results pave the way for wider applications of quantum coherence for a set of quantum states, including quantum key distribution protocols and probabilistic quantum cloning.
ER  -