Abstract
Department of Physics, Quaid-i-Azam University, Islamabad 45320, Pakistan(Dated: February 21, 2009)We present a simple scheme using two identical cross-phase modulation processes in decoherenceenvironment to generate superpositions of two coherent states with the opposite phases, which areknown as cat states. The scheme is shown to be robust against decoherence due to photon absorptionlosses and other errors, and the design of its experimental setup is also discussed.
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