Entanglement-enhanced optical gyroscope

Matthias Fink, Fabian Steinlechner, Johannes Handsteiner, Jonathan P Dowling, Thomas Scheidl, Rupert Ursin
2019 New Journal of Physics  
Fiber optic gyroscopes (FOG) based on the Sagnac effect are a valuable tool in sensing and navigation and enable accurate measurements in applications ranging from spacecraft and aircraft to self-driving vehicles such as autonomous cars. As with any classical optical sensors, the ultimate performance of these devices is bounded by the standard quantum limit (SQL). Quantum-enhanced interferometry allows us to overcome this limit using non-classical states of light. Here, we report on an
more » ... port on an entangled-photon gyroscope that uses path-entangled NOON-states (N=2) to provide phase supersensitivity beyond the standard-quantum-limit.
doi:10.1088/1367-2630/ab1bb2 fatcat:tqm7jqv4ljgo3do2gebasw7x2m