Fig. 4: Generation of entangled states using CCI.
From: Experimental realization of phase-controlled dynamics with hybrid digital–analog approach
a, b The measured populations of Peg, Pge, and Pgg + Pee. The non-entangled states \(\left|eg\right\rangle\) and \(\left|ge\right\rangle\) in a and b evolve into the entangled states of \(\left(\left|gg\right\rangle \pm i\left|ee\right\rangle \right)/\sqrt{2}\) within time tb under the maximum TRS breaking condition ϕ = ± π/2. c Real and d imaginary parts of the density matrix for the entangled state of \(\left(\left|gg\right\rangle +i\left|ee\right\rangle \right)/\sqrt{2}\), constructed from data obtained by quantum state tomography. e Real and f imaginary parts for the state of \(\left(\left|gg\right\rangle -i\left|ee\right\rangle \right)/\sqrt{2}\).
