A quantum network will consist of many physically separated nodes connected by quantum communication channels that distribute entanglement between them. Such nodes will require mechanisms for the generation, routing, and measurement of quantum states to fulfill various quantum communication protocols between any two quantum nodes. An aim of our quantum network metrology program is to develop portable, low-cost, robust, and reliable tools that can be deployed anywhere into a quantum network testbed for these purposes. The prototype source and receiver systems described here will serve as benchmarking devices for the implementation of quantum network metrology in real-life testbeds and are, by-design, integrated into a 19” rack to allow for the easy deployment into anywhere with standard networking infrastructure. Measurements performed using this toolset have shown a fidelity of more than 0.98 with a polarization entanglement visibility of 0.97.
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