Probing quantum entanglement, quantum discord, classical correlation, and the quantum state without disturbing them
Zhen-ni Li, Jiasen Jin, Chang‐shui Yu · Physical Review A · 2011
We present schemes for a type of one-parameter bipartite quantum state to probe quantum entanglement, quantum discord, the classical correlation, and the quantum state based on cavity QED. It is shown that our detection does not influence all these measured quantities. We also discuss how the spontaneous emission introduced by our probe atom influences our detection.