Experimental quantum networks: foundations and applications


Quantum entanglement is arguable the most counterintuitive yet most powerful element in quantum physics. If we are able to entangle quantum systems (qubits) over large distances, a new type of network called a Quantum Internet may be realized. Such a Quantum Internet will enable a host of applications that are impossible using classical information technology, as well as a new set of tests of nature itself. 

Our group works with single electronic and nuclear spins near Nitrogen-Vacancy centers (NV centers) in diamond. These spin states exhibit long coherence times and they can be manipulated with high fidelity using state-of-the-art microwave and optical quantum control techniques. Capitalizing on the unique strengths of these NV centers, we were able to create the first entangled state between electrons on widely separated chips in 2013. This breakthrough has enabled quantum teleportation between chips (Science 2014), the first loophole-free Bell test (Nature 2015) and the first distillation of entanglement on a rudimentary quantum network (Science 2017). 

Current work focusses on realizing and exploring the world’s first multi-node quantum network and on extending the reach of the entanglement to tens of kilometers. Besides demonstrating the basic elements of a future quantum internet we are interested in fundamental issues in quantum mechanics related to quantum measurements and foundations. Excellent candidates are encouraged to contact Ronald Hanson for up-to-date information on available projects.

For more information please contact Ronald Hanson, If you want to apply, please click here.

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