Abstract
A scheme is proposed for generating the superpositions of several coherent statesin a cavity field with dispersive cavity quantum electrodynamics (QED). Inthe scheme, a sequence of atoms interacts dispersively with the cavity field,connected with a microwave source, and is manipulated by classical fields,followed by state-selective measurements. In this way, the cavity field iscollapsed onto a superposition of several coherent states along a straightline with controllable coefficients. This scheme provides the possibility forquantum state engineering via coherent-state superpositions in cavity QEDfor the first time.
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