  Exploiting semiconductor fabrication techniques, natural carriers of quantum
information such as atoms, electrons, and photons can be embedded in scalable
integrated devices. Integrated optics provides a versatile platform for
large-scale quantum information processing and transceiving with photons.
Scaling up the integrated devices for quantum applications requires
highperformance single-photon generation and photonic qubit-qubit entangling
operations. However, previous demonstrations report major challenges in
producing multiple bright, pure and identical single-photons, and entangling
multiple photonic qubits with high fidelity. Another notable challenge is to
noiselessly interface multiphoton sources and multiqubit operators in a single
device. Here we demonstrate on-chip genuine multipartite entanglement and
quantum teleportation in silicon, by coherently controlling an integrated
network of microresonator nonlinear single-photon sources and linear-optic
multiqubit entangling circuits. The microresonators are engineered to locally
enhance the nonlinearity, producing multiple frequencyuncorrelated and
indistinguishable single-photons, without requiring any spectral filtering. The
multiqubit states are processed in a programmable linear circuit facilitating
Bell-projection and fusion operation in a measurement-based manner. We
benchmark key functionalities, such as intra-/inter-chip teleportation of
quantum states, and generation of four-photon Greenberger-HorneZeilinger
entangled states. The production, control, and transceiving of states are all
achieved in micrometer-scale silicon chips, fabricated by complementary
metal-oxide-semiconductor processes. Our work lays the groundwork for scalable
on-chip multiphoton technologies for quantum computing and communication.
