ArticleNature communications2024
Distributed quantum sensing of multiple phases with fewer photons.
Article in Nature communications, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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Who cites it
5 citing papers in PubMed.
- Entanglement swapping through the amplitude damping noise channel.Scientific reports · 2026Article
- Distributed multi-parameter quantum metrology with a superconducting quantum network.Nature communications · 2026Article
- Distributed quantum sensing with measurement-after-interaction strategies.NPJ quantum information · 2026Article
- Informationally complete distributed metrology without a shared reference frame.Nature communications · 2025Article
- Photonic variational quantum eigensolver for NISQ-compatible quantum technology.Nano convergence · 2025Review
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Authors and funding
10 authors.
Funding
Abstract
Distributed quantum metrology has drawn intense interest as it outperforms the optimal classical counterparts in estimating multiple distributed parameters. However, most schemes so far have required entangled resources consisting of photon numbers equal to or more than the parameter numbers, which is a fairly demanding requirement as the number of nodes increases. Here, we present a distributed quantum sensing scenario in which quantum-enhanced sensitivity can be achieved with fewer photons than the number of parameters. As an experimental demonstration, using a two-photon entangled state, we estimate four phases distributed 3 km away from the central node, resulting in a 2.2 dB sensitivity enhancement from the standard quantum limit. Our results show that the Heisenberg scaling can be achieved even when using fewer photons than the number of parameters. We believe our scheme will open a pathway to perform large-scale distributed quantum sensing with currently available entangled sources.
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Registered trials
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