We address the propagation of a single photon pulse with two polarization components, i.e., a polarization qubit, in an inhomogeneously broadened "phaseonium" \Lambda-type three-level medium. We combine some of the non-trivial propagation effects characteristic for this kind of coherently prepared systems and the controlled reversible inhomogeneous broadening technique to propose several quantum information processing applications, such as a protocol for polarization qubit filtering and sieving as well as a tunable polarization beam splitter. Moreover, we show that, by imposing a spatial variation of the atomic coherence phase, an effcient quantum memory for the incident polarization qubit can be also implemented in \Lambda-type three-level systems.
@article{arxiv.1109.5110,
title = {Quantum state storage and processing for polarization qubits in an inhomogeneously broadened \Lambda-type three-level medium},
author = {D. Viscor and A. Ferraro and Yu. Loiko and J. Mompart and V. Ahufinger},
journal= {arXiv preprint arXiv:1109.5110},
year = {2012}
}