Distributing entanglement over long distances is a core challenge of Quantum Communications. Quantum repeaters, hosting entanglement swapping protocols, have been proposed as a viable solution, though they have yet to be realized commercially. Basic research groups have demonstrated memory-assisted entanglement swapping using NV diamond centers or cold atomic vapor memories. Qunnect is building a product suite to support entanglement swapping based on warm atomic vapor. While the engineering of these systems is challenging, the elimination of extreme cooling and vacuum support provides numerous advantages for network scalability. I will discuss our progress to date and upcoming fiber testbed demonstrations.
Quantum communication leverages the physical properties of entanglement and superposition to create networks capable of connecting quantum computers, sensors, and secure nodes. Photons are a particularly viable information vehicle as they are unaffected by a broad range of environmental variables. They are also very versatile, supporting the teleportation of quantum information upon interacting with information-carrying qubits, whether these qubits are generated by a quantum computer or a random qubit source. Existing and emerging technologies will be discussed, as well as perspectives on the open challenges of the field.
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