科研之友
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摘要
Efficient local implementation of a nonlocal multi-party quantum Toffoli gate is considered. We present and demonstrate a scheme that can improve significantly the implementation of this nonlocal (N 1)-party gate by harnessing N entangled pairs of qubits as quantum channels and a (N 1)-dimensional qudit as a catalyser. The quantum circuit that does the proposed implementation is built entirely of local single-body and two-body gates, and has only (2N 1) two-body gates. The method that we describe is independent of the particular physical system used to encode quantum information and the way in which the elemental gates are realized.
- 出版日期2011-2
- 单位佛山科学技术学院
