The paper presents a significant breakthrough in generating entanglement between solid-state qubits separated by a distance of 3 meters. The researchers used nitrogen-vacancy (NV) centers in diamond, which are known for their long-lived electronic spins and robust optical interfaces. The entanglement was established through a protocol that involves local creation of spin-photon entanglement and subsequent joint measurement of the photons. Detection of the photons indicated the projection of the spin qubits onto an entangled state. The non-local quantum correlations were verified through single-shot readout on the qubits in different bases. The experiment demonstrates the feasibility of long-distance quantum networks using solid-state qubits, opening up possibilities for quantum information processing, communication, and potentially extending quantum cryptography to long distances. The results also highlight the potential of NV centers as highly promising candidates for implementing quantum networks, comparable to trapped atomic qubits in terms of performance.The paper presents a significant breakthrough in generating entanglement between solid-state qubits separated by a distance of 3 meters. The researchers used nitrogen-vacancy (NV) centers in diamond, which are known for their long-lived electronic spins and robust optical interfaces. The entanglement was established through a protocol that involves local creation of spin-photon entanglement and subsequent joint measurement of the photons. Detection of the photons indicated the projection of the spin qubits onto an entangled state. The non-local quantum correlations were verified through single-shot readout on the qubits in different bases. The experiment demonstrates the feasibility of long-distance quantum networks using solid-state qubits, opening up possibilities for quantum information processing, communication, and potentially extending quantum cryptography to long distances. The results also highlight the potential of NV centers as highly promising candidates for implementing quantum networks, comparable to trapped atomic qubits in terms of performance.