Temporal Aharonov-Bohm effect

We present a temporal adaptation of the Aharonov-Bohm effect with a quantum interferometer. By embedding two high-gain time-lenses in series and probing the entangled signal–idler pair with an electro-optic modulation, we resolve femtosecond-scale phase shifts with an interferometric visibility. Next, we resort to entangled photons and demonstrate hot a joint temporal function (JSF) analysis enhances the signal-to-noise ratio compared with intensity-only detection. Beyond precision metrology, the platform provides a laboratory analogue for space-time phenomena, including frame dragging near rotating black holes. The results open a route toward chip-scale, ultrafast sensors for quantum timing, gravitational simulations, and broadband optical communications.