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4
-
-
4243051612
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-
note
-
Issues involving observation by the cat itself (by virtue of its consciousness) are beyond the scope of this article. For our purposes, the cat can be replaced, for example, by an object placed in a superposition of macroscopically separated positions.
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5
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4243151817
-
-
note
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2>)/√2, or a superposition of two classical-like states that are not correlated with the state of a second system. In the analysis of the state shown in Eq. 2, we in fact create the state corresponding to this alternate definition.
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1ωι.
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50
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4243183755
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note
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3/2 excited state are small (detuning ≈ -210 GHz) and can be neglected here.
-
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52
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32644451804
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dτ, we expect α(dτ) to saturate because of nonlinear correction factors that limit the amplitude of the coherent state and introduce amplitude squeezing [see(31) and W. Vogel and R. L. de Matos Filho, Phys. Rev. A 52, 4214 (1995)]. For the experimental Lamb-Dicke parameter of ∼0.2. these corrections are not significant for α ≤ 5.
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4243154073
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note
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We acknowledge key assistance from W. M. Itano, D. Leibfried, J. C. Bergguist, and J. Erickson and useful discussions with J. I. Cirac, P. Zoller, and D. Walls. We thank M. Young, S. Mechels, and D. Lee for critical comments on the manuscript. This work is supported by the U.S. Office of Naval Research and the U.S. Army Research Office.
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