Figure 7

Up plot: The time evolution of concurrence of qubits \((1,\,4)\) versus the scaled time \(\lambda t\) after measuring the qubits \((2,\,3)\) if results in \(|e,g\rangle \) (solid lines) and \(|g,e\rangle \) (dashed lines) when the initial states of qubit pairs \((1,\,2)\), \((3,\,4)\) are prepared as in Eq. (1) of manuscript. Down plot: The time evolution of concurrence of qubits \((1,\,8)\) versus the scaled time \(\lambda \tau \) after measuring \(|g,e\rangle \) on qubits \((4,\,5)\) when the initial states of qubits \((1,\,4)\) and \((5,\,8)\) at \(\lambda t\) have been respectively measured as \(|g,e\rangle _{2,3}\), \(|g,e\rangle _{6,7}\) (solid lines) and \(|e,g\rangle _{2,3}\), \(|g,e\rangle _{6,7}\) (dashed lines) with \(\lambda t=6\) and \(\Gamma =0.01 \lambda \).