Optical fiber interferometer stabilization for time-bin qubit measurement

Fiber interferometric stabilization is important for the physical realization of quantum information systems where precise measurements are required. It is needed to compensate for temperature instability found in real-world settings and phase shifting of laser frequencies. In this setup, a method for actively and passively stabilizing an unbalanced fiber optic Michelson interferometer used for time-bin qubit measurement is proposed. The stabilization feedback system, its implementation in a quantum network and results are discussed.