Quantum metrology and information processing with entangled atoms

Full text: Our group at NIST is interested in the metrological and information-processing applications of state-engineered and entangled atoms, in particular, trapped atomic ions. One driver for the experimental work has been the prospect of realizing a quantum computer, but demonstrations of simple computing algorithms also elucidate fundamental aspects of entangled quantum systems. In addition, we are applying the elements of quantum information processing to such topics as increasing the signal-to-noise ratio in spectroscopy and atomic clocks. Future work is, in part, devoted to scaling to larger numbers of entangled ions. Work in collaboration with D. Leibfried, M. D. Barrett, J. C. Bergquist, R. B. Blakestad, J. Bollinger, J. Britton, J. Chiaverini, D. Hume, W. M. Itano, M. Jensen, J. D. Jost, E. Knill, J. Koelemeij, C. Langer, W. Oskay, R. Ozeri, R. Reichle, T. Rosenband, T. Schaetz, P. Schmidt, and S. Seidelin. (author)