  We investigate the performance of quantum teleportation under a lossy
environment using two different types of optical hybrid qubits. One is the
hybrid of the vacuum and single-photon states with coherent states and the
other is the hybrid of polarized single-photon states with coherent states. We
have shown that the hybrid qubit using vacuum and single-photon states is
generally more robust to photon loss effects compared to the one using the
photon polarization with respect to fidelities and success probabilities of
quantum teleportation.
