Experimental Private Quantum Networked Sensing
Abstract
Entangling distant quantum sensors is a key application of future quantum networks, allowing for the estimation of global functions of local parameters, with precision that is not possible with stand-alone, individual, quantum sensors. However, with this advantage comes the risk of information leakage over the network via possible malicious parties. It is often particularly important that local parameters remain unknown and that only the global function is shared across the network. Recently, the notion of privacy has been introduced in this context, which ensures that only the agreed function of parameters is shared over the network, even when malicious parties control the network itself, whilst maintaining the estimation advantage. In this work, we introduce a noise-robust protocol for private quantum networked sensing, which we realise using a high-fidelity Greenberger-Horne-Zeilinger (GHZ) state source. We further run a comparative analysis and simulate attacks using three different quantum states, a four-qubit GHZ state, two Bell pairs, and a fully separable state. Our results highlight the clear advantage of GHZ states in maintaining high precision, accuracy, and privacy for the distributed estimation task.
Related
- Experimental realization of quantum-computing-enhanced sensing
- Experimental quantum-computing-enhanced sensing using Grover's algorithm
- Private Correlations Certify Sensing Capability
- Private communication via zero-private-capacity quantum channels
- Influence of pump-probe beam offset and modulation frequency on photothermal deflection spectroscopy signals in liquid sensing: A combined theoretical and experimental study
BibTeX
@misc{laurentpuig2026experimental,
title = {{Experimental Private Quantum Networked Sensing}},
author = {Nicolas Laurent-Puig and Laura dos Santos Martins and Luis Bugalho and Santiago Scheiner and Majid Hassani and Sean William Moore and Damian Markham and Eleni Diamanti},
howpublished = {arXiv},
year = {2026},
month = sep,
doi = {10.48550/arxiv.2609.16743},
eprint = {2609.16743},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2609.16743},
}
RIS
TY - UNPB
TI - Experimental Private Quantum Networked Sensing
AU - Nicolas Laurent-Puig
AU - Laura dos Santos Martins
AU - Luis Bugalho
AU - Santiago Scheiner
AU - Majid Hassani
AU - Sean William Moore
AU - Damian Markham
AU - Eleni Diamanti
PY - 2026
DA - 2026/09/15
PB - arXiv
DO - 10.48550/arxiv.2609.16743
UR - https://arxiv.org/abs/2609.16743
AB - Entangling distant quantum sensors is a key application of future quantum networks, allowing for the estimation of global functions of local parameters, with precision that is not possible with stand-alone, individual, quantum sensors. However, with this advantage comes the risk of information leakage over the network via possible malicious parties. It is often particularly important that local parameters remain unknown and that only the global function is shared across the network. Recently, the notion of privacy has been introduced in this context, which ensures that only the agreed function of parameters is shared over the network, even when malicious parties control the network itself, whilst maintaining the estimation advantage. In this work, we introduce a noise-robust protocol for private quantum networked sensing, which we realise using a high-fidelity Greenberger-Horne-Zeilinger (GHZ) state source. We further run a comparative analysis and simulate attacks using three different quantum states, a four-qubit GHZ state, two Bell pairs, and a fully separable state. Our results highlight the clear advantage of GHZ states in maintaining high precision, accuracy, and privacy for the distributed estimation task.
ER -