Abstract
Joint unitary operations play a central role in quantum communication and computation. We give a quantum circuit for implementing a type of unconstructed useful joint unitary evolutions in terms of controlled-NOT (CNOT) gates and single-qubit rotations. Our synthesis is optimal and possible in experiment. Two CNOT gates and seven R x , R y or R z rotations are required for our synthesis, and the arbitrary parameter contained in the evolutions can be controlled by local Hamiltonian or external fields.
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Acknowledgments
This work is supported by the National Natural Science Foundation of China under Grant No. 11604012, the Fundamental Research Funds for the Central Universities under Grant No. 230201506500024, and the National Natural Science Foundation of China under Grant Nos. 11674033, 11474026.
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Wei, HR., Alsaedi, A., Hobiny, A. et al. Optimal Synthesis of the Joint Unitary Evolutions. Int J Theor Phys 57, 1942–1947 (2018). https://doi.org/10.1007/s10773-018-3719-1
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DOI: https://doi.org/10.1007/s10773-018-3719-1