Polarization drift control in fibers for entangled polarization-encoded qubits
Bernhard Schrenk, Alessandro Fedrizzi, Hannes Huebel, Andreas Poppe, Anton Zeilinger · 2007
In this contribution, the authors present a solution to the unitary polarization change of the fiber, which is time-dependent on environmental parameters (e.g. temperature and stress). Classical light (probe signal) is used to follow the polarization drift of the fiber. Furthermore we require that the polarization stabilization procedure does not interfere with the quantum signal.