This study demonstrates the high-fidelity generation of four-photon Greenberger-Horne-Zeilinger (GHZ) states using a quantum-dot based single-photon source and a reconfigurable glass photonic circuit. The researchers achieved a fidelity of 86.0 ± 0.4% and a purity of 76.3 ± 0.6% for the generated states, with a violation of a Bell-like inequality by more than 39 standard deviations, confirming the presence of non-classical correlations. The team also implemented a four-partite quantum secret sharing protocol, achieving a qubit-error rate of 10.87% with up to 1978 bits of sifted key. The results show that quantum-dot technology combined with glass photonic circuitry offers a viable path for entanglement generation and distribution. The study highlights the potential of integrated photonic platforms for scalable quantum technologies, with the demonstrated system capable of high-fidelity, high-rate entanglement generation. The work represents a significant milestone in the generation and use of high-dimensional quantum states, demonstrating the feasibility of on-chip quantum information processing. The integration of quantum-dot-based single-photon sources with reconfigurable photonic circuits enables the generation of complex multi-photon entangled states, which are essential for quantum communication and computing. The results also show that the platform can be used for practical quantum applications, such as quantum secret sharing, with high performance and low error rates. The study underscores the importance of miniaturization and integration in the development of scalable quantum technologies.This study demonstrates the high-fidelity generation of four-photon Greenberger-Horne-Zeilinger (GHZ) states using a quantum-dot based single-photon source and a reconfigurable glass photonic circuit. The researchers achieved a fidelity of 86.0 ± 0.4% and a purity of 76.3 ± 0.6% for the generated states, with a violation of a Bell-like inequality by more than 39 standard deviations, confirming the presence of non-classical correlations. The team also implemented a four-partite quantum secret sharing protocol, achieving a qubit-error rate of 10.87% with up to 1978 bits of sifted key. The results show that quantum-dot technology combined with glass photonic circuitry offers a viable path for entanglement generation and distribution. The study highlights the potential of integrated photonic platforms for scalable quantum technologies, with the demonstrated system capable of high-fidelity, high-rate entanglement generation. The work represents a significant milestone in the generation and use of high-dimensional quantum states, demonstrating the feasibility of on-chip quantum information processing. The integration of quantum-dot-based single-photon sources with reconfigurable photonic circuits enables the generation of complex multi-photon entangled states, which are essential for quantum communication and computing. The results also show that the platform can be used for practical quantum applications, such as quantum secret sharing, with high performance and low error rates. The study underscores the importance of miniaturization and integration in the development of scalable quantum technologies.