Dually Locked Frequency Conversion for Memory Interfaces and Clock Distribution in a Unified Transmission Control Protocol for Quantum Networks

A unified quantum network architecture is introduced that seamlessly applies to all memory types while sharply reduc­ing experimental overhead. The scheme depends on the following elements: A unified quantum network framework based on photon heralding. As a unified quantum network framework, a scheme for optically heralded entanglement that applies to superconductor-to-optical interfaces equally as to other memory-photon interfaces (such as spin-photon interfaces. and others). To address the challenges noted above. a scheme termed "Universal Quantum Bus" (UQB) is introduced. UQB is described for connecting diamond color centers across a telecom fiber network. however the scheme works equally for all other memory types.