MIT Researchers Develop Scalable Interconnect for Superconducting Quantum Processors, Enabling Remote Entanglement and Enhanced Communication

MIT researchers have developed a new interconnect device for superconducting quantum processors, enabling scalable, all-to-all communication. * The interconnect allows all superconducting quantum processors in a network to communicate directly with each other, overcoming limitations of current point-to-point architectures. * The device uses a superconducting waveguide to shuttle photons between processors, allowing for user-defined directionality. * It demonstrated remote entanglement between two quantum processors, a key step towards developing a distributed network. * Each module is composed of four qubits, which serve as an interface between the waveguide carrying the photons and the larger quantum processors. * A reinforcement learning algorithm was used to optimize photon absorption efficiency, achieving greater than 60 percent. * The architecture allows for creating a network with all-to-all connectivity, enabling remote entanglement among any pair of modules.