Entangling quantum and classical states of light

M Kang (Seoul National University)

We present a feasible scheme, together with its experimental results, to generate hybrid entanglement 
between "quantum" and "classical" states of light. Hybrid entanglement between a single photon and a
 coherent state in a free-traveling field is a useful resource for optical quantum information processing
 and fundamental tests of quantum theory. However, generating such a state is very difficult due to the
 requirement of clean cross-Kerr nonlinearity. Our scheme utilizes a technical to quantum mechanically
 superpose distinct operations to small-scale hybrid entanglement and the tele-amplification protocol to
 amplify it.