Figure 2
From: Experimental demonstration of a fully inseparable quantum state with nonlocalizable entanglement

Dependence of pPPT, Eq. (11), (solid blue line), pnloc, Eq. (18), (dashed red line) and pcol, Eq. (26), (dashed-dotted black line), as a function of parameter μ. Gray region depicts fully inseparable states (9) with nonlocalizable entanglement. The entanglement of all states above solid blue line can be transformed into two-qubit entanglement by the CNOT operation followed by conditioning on outcome “0” of the measurement in computational basis of output target qubit. The entanglement of all states above dashed-dotted black line can be transformed into two-qubit entanglement by the CNOT operation followed by trace-preserving operation (22). A dark magenta point on the right vertical axis depicts a state with nonlocalizable entanglement ρ1/4,1, Eq. (9), which we prepared experimentally. See text for details.