Fig. 2: Time-reversed evolution of the photon-emitter graph state during the graph state generation algorithm. | npj Quantum Information

Fig. 2: Time-reversed evolution of the photon-emitter graph state during the graph state generation algorithm.

From: Optimization complexity and resource minimization of emitter-based photonic graph state generation protocols

Fig. 2

The input target state shown in panel 1 contains of 6 entangled photons (black nodes) and 3 decoupled emitter qubits (orange nodes). The algorithm converts the input state into the disentangled state shown in panel 15 through a sequence of time-reversed measurements (TRMs) and photon absorptions (PAs), interspersed with single-qubit gates and emitter-emitter CNOT gates (DE). We omit showing steps that involve single-qubit gates.

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