  Quantum entanglement of particles is regarded as a fundamental character in
quantum information, in which quantum state should be given for whole system
instead of independently describing single particle. Constructing quantum
memory of photonic entanglement is essential for realizing quantum networks,
which had been performed previously by many memory protocols. Of which Raman
quantum memory gives advantages in broadband and high-speed properties,
resulting in huge potential in quantum network and quantum computation.
However, Raman quantum memory of photonic polarised entanglement is a challenge
work and still missing. Here, we report two Raman quantum memories based on gas
atomic ensembles: 1. Heralded Raman quantum memory of hybrid entanglement of
path and polarization of single photon. 2. Raman storage of two-particle
photonic polarised entangled state. Our experimental performances of these two
different Raman quantum storages of photonic entanglement show a very promising
prospective in quantum information science.
