Hong, Seongjin Park, Chang Hoon Choi, Yeon-Ho Kim, Yong-Su Cho, Young-Wook Oh, Kyunghwan Lim, Hyang-Tag 2024-01-19T17:00:18Z 2024-01-19T17:00:18Z 2021-09-02 2020-09 1367-2630 https://pubs.kist.re.kr/handle/201004/118214 Quantum entanglement lies at the heart of quantum mechanics in both fundamental and practical aspects. The entanglement of quantum states has been studied widely both theoretically and experimentally, however, the entanglement of operators has not been studied much experimentally in spite of its importance. Here, we propose a scheme to realize arbitrary entangled operations based on a coherent superposition of local operations with a non-zero probability of failure. Then, we experimentally implement several intriguing two-qubit entangled operations in photonic systems. We also discuss the generalization of our scheme to extend the number of superposed operations and the number of qubits. Due to the simplicity of our scheme, we believe that it can reduce the complexity or required resources of the quantum circuits and provide insights to investigate properties of entangled operations. English IOP PUBLISHING LTD Experimental implementation of arbitrary entangled operations Article 10.1088/1367-2630/abb64a 1 NEW JOURNAL OF PHYSICS, v.22, no.9 NEW JOURNAL OF PHYSICS 22 9 scie scopus 000575215100001 2-s2.0-85092222701 Physics, Multidisciplinary Physics Article operator entanglement superposition of operators Schmidt number