Distributed quantum sensing
Networked probes can estimate spatially distributed parameters or weighted combinations.
$$\phi=\sum_j w_j\theta_j$$
Physical intuition
Networked probes can estimate spatially distributed parameters or weighted combinations.
Deep dive: physical mechanism
Correlate remote nodes, choose an encoding and compare with local sensing plus classical communication.
What is measured experimentally?
Measure the target linear combination and network overhead.
Assumptions, noise and limitations
Loss, synchronization and entanglement distribution limit scale.
Research and simulation exercise
Simulate two-node gradient estimation with independent versus correlated probes.
Connect the ideas
Explore the chapter overview, learning path, and references.