Multiple multicontrol unitary operations: Implementation and applications

• 来源期刊: 中国科学:物理学 力学 天文学（英文版）
• 年，卷（期）: 2018,（4）
• 页码范围: 44-53
• 页数: 10页
• 语种: 英文

摘要

The efficient implementation of computational tasks is critical to quantum computations.In quantum circuits,multicontrol unitary operations are important components.Here,we present an extremely efficient and direct approach to multiple multicontrol unitary operations without decomposition to CNOT and single-photon gates.With the proposed approach,the necessary twophoton operations could be reduced from O(n3) with the traditional decomposition approach to O(n),which will greatly relax the requirements and make large-scale quantum computation feasible.Moreover,we propose the potential application to the (n-k)-uniform hypergraph state.