Implementation of CU gates and its application in a remote-controlled quantum operation

• URL: http://arxiv.org/abs/2405.15931v1
• Date: Fri, 24 May 2024 20:42:25 GMT
• Title: Implementation of CU gates and its application in a remote-controlled quantum operation
• Authors: Byungjoo Kim, Seongjin Hong, Yong-Su Kim, Kyunghwan Oh, Hyang-Tag Lim,
• Abstract summary: We propose and experimentally demonstrate a scheme for implementing CU gates between arbitrary pairs of unitary gates. We believe that the proposed remote-controlled quantum gate model can pave the way for secure and efficient quantum information processing.
• Score: 1.436934698922473
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Recently, remote-controlled quantum information processing has been proposed for its applications in secure quantum processing protocols and distributed quantum networks. For remote-controlled quantum gates, the experimental realization of controlled unitary (CU) gates between any quantum gates is an essential task. Here, we propose and experimentally demonstrate a scheme for implementing CU gates between arbitrary pairs of unitary gates using the polarization and time-bin degrees of freedom of single-photons. Then, we experimentally implement remote-controlled single-qubit unitary gates by controlling either the state preparation or measurement of the control qubit with high process fidelities. We believe that the proposed remote-controlled quantum gate model can pave the way for secure and efficient quantum information processing.

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