We present a scheme to generate three particle hyper-entanglement utilizing polarization and orbital angular momentum (OAM) of a photon. We show that the generated state can be used to teleport a two-qubit state described by the polarization and the OAM. The proposed quantum system has also been used to describe a new efficient quantum key distribution (QKD) protocol. We give a sketch of the experimental arrangement to realize the proposed teleportation and the QKD.

We report realization of an integrated (all-pass) phase-only filter with a record frequency resolution of 1 GHz (at least 10× improvement compared to a waveshaper) using Bragg grating technology in an all-fibre platform. The phase filter is utilized to realize high-speed fully-passive NOT and XNOR logic operations in a cm-long structure.