Superconducting Quantum Node for Entanglement and Storage of Microwave Radiation
E. Flurin, N. Roch, J. D. Pillet, F. Mallet, B. Huard
DOI 10.1103/PhysRevLett.114.090503 · Physical Review Letters
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Abstract
Superconducting circuits and microwave signals are good candidates to realize quantum networks, which are the backbone of quantum computers. We have realized a quantum node based on a 3D microwave superconducting cavity parametrically coupled to a transmission line by a Josephson ring modulator. We first demonstrate the time-controlled capture, storage, and retrieval of an optimally shaped propagating microwave field, with an efficiency as high as 80%. We then demonstrate a second essential ability, which is the time-controlled generation of an entangled state distributed between the node and a microwave channel.
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