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In its infancy circuit quantum electrodynamics (cQED) has quickly started reproducing fundamental quantum optical experiments, e.g. observation of vacuum rabi oscillations in frequency and time domain, with unprecedented cooperativity. This was possible because of the large coupling of the quasi one-dimensional microwave field of the superconducting transmission line resonators to the macroscopic...
This work presents steady state entanglement and shows how this entanglement can be obtained. Current experiments are performed on the cusp of reaching the quantum regime with states. Then, the created entanglement can be verified by applying an additional weak probe laser.
The experimental observation of quantum phenomena in strongly correlated many particle systems is difficult because of the short length-and timescales involved. Obtaining at the same time detailed control of individual constituents appears even more challenging and thus to date inhibits employing such systems as quantum information processing devices. Substantial progress has been achieved with Josephson...
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