Fig. 2: Quantum interference calibration.
From: Time-bin entangled Bell state generation and tomography on thin-film lithium niobate
a Schematic of interfering state generation. b Single qubit Bloch sphere; the equator can be swept across by tuning the relative phase between interferometer arms. c Quantum interference calibration map: oscillation of the quantum state projected onto the energy basis over a wide enough range to span the full Bloch spheres equator. Top/side insets show the interference trend for the signal and idler channels, respectively. Uneven sampling of the map is due to the measurement being taken in voltage steps rather than power.
