Distributed Quantum Sensing with Multi-Mode N00N States: Heisenberg-Level Sensitivity for Real-World Sensor Networks
newswade
October 29, 2025
Multi-mode N00N states just gave distributed quantum sensing a Heisenberg-level upgrade. A new experiment used a four-mode “2002” photonic state to estimate the average of two remote phases and beat the standard quantum limit by 2.74 dB — using only local beam splitters and photon-number detection. This is a practical road map to entanglement-enhanced sensor networks.
