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Updated: May 23, 2026

Quantum State Engineering of Light with Continuous-wave Optical Parametric Oscillators
Published on: May 30, 2014
Experimental realization of a four-photon seven-qubit graph state for one-way quantum computation
Sang Min Lee1, Hee Su Park, Jaeyoon Cho
1Korea Research Institute of Standards and Science, Daejeon 305-340, South Korea.
Abstract:
We propose and demonstrate the scaling up of photonic graph states through path qubit fusion. Two path qubits from separate two-photon four-qubit states are fused to generate a two-dimensional seven-qubit graph state composed of polarization and path qubits. Genuine seven-qubit entanglement is verified by evaluating the witness operator. Six qubits from the graph state are used to demonstrate the Deutsch-Jozsa algorithm for general two-bit functions with a success probability greater than 90%.
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