%0 Journal Article
%T One-step implementation of an N-qubit quantum phase gate through a double Raman passage<br>
%J 中国物理 B
%D 2010
%I 
%X We propose a scheme for controllably implementing an N-qubit phase gate by one step within a ground-state subspace of N three-state atoms trapped in a cavity through a double Raman passage. We can extend our scheme to the realisation of an arbitrary N-qubit phase gate by appropriately adjusting coupling strengths and detunings between atoms and external driving fields. The advantage of this one-step scheme is its robustness against decoherence.
%K Raman-coupled model
%K quantum computation
%K quantum phase gate<br>
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=CD8D6A6897B9334F09D8D1648C376FB4&aid=2D49C0F125CE5B24CB946EDA08FE84DD&yid=140ECF96957D60B2&vid=2A8D03AD8076A2E3&iid=38B194292C032A66&journal_id=1009-1963&journal_name=中国物理&referenced_num=0&reference_num=20