A semiconductor quantum dot interface for entangled multiphoton generation in the telecom C-band

Multiphoton entangled states are essential for memoryless quantum repeaters and measurement-based quantum computation. We demonstrate scalable multiphoton entanglement generation directly in the telecom C-band from an InAs/InP quantum dot, achieving two- and three-qubit fidelities of 59.5% and 52.7%, respectively.