Quantum Computation, Spectroscopy of Trapped Ions, and Schrodinger's Cat
  We summarize efforts at NIST to implement quantum computation using trapped ions, based on a scheme proposed by J.I. Cirac and P. Zoller (Innsbruck University). The use of quantum logic to create entangled states, which can maximize the quantum-limited signal-to-noise ratio in spectroscopy, is discussed. 
D. J. Wineland, C. Monroe, W. M. Itano, D. Kielpinski, B. E. King, C.   J. Myatt, Q. A. Turchette, and C. S. Wood