Generation of photonic time-bin qubit in dense atomic media

In this paper, we report a scheme for generation of entangled single-photon states coherently delocalized in two well-separated temporal modes. The proposed scheme employs strong nonclassical correlations between the Stokes and anti-Stokes photons generated and represents a remotely source for Stokes time-bin. We analyze the entangled nature and nonlocality in Stokes qubit by employing the Bell's inequality formulated for two-mode Wigner function.