Quantum entanglement technology has been demonstrated at the network level. Optical switching technology has been proposed as a means for connecting nodes to exchange streams of photons without affecting critical quantum properties. The current state of the art is focused on permanent or semi-permanent connections, while the greatest need for quantum information exchange is for short-duration transactions (e.g., delivery of qubits between devices in the same or different locations, or for exchange of quantum keys for secure financial/commercial transactions, etc.). In order to more fully utilize an optical network that supports quantum information exchange, techniques are presented herein that allow the network to be utilized on a per-transaction basis, or even a per-packet basis. Both out-of-band and in-band signaling/mechanisms are discussed herein to provide quantum information exchange within an optical network.
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Bradford, Rich, "TRANSACTION BASED QUANTUM INFORMATION DELIVERY MECHANISM", Technical Disclosure Commons, (November 16, 2021)