Secure direct communication using the polarization entangled atomic ensembles
Peng Xue, Guang‐Can Guo · Journal of Physics B Atomic Molecular and Optical Physics · 2004
We propose a scheme with potential experimental realization to generate 'polarization' entanglement between two atomic ensembles and show one of the applications—a novel secure communication allowing asymptotically key distribution and quasisecure direct communication. The scheme involves laser manipulation of atomic ensembles, adjustable quarter- and half-wave plates, beam splitters, polarizing beam splitters and single-photon detectors, and well fits the status of the current experimental technology.