Options
Efficient fusion of photonic W-states with nonunitary partial-swap gates
Citation
Wei, H. R., Liu, W. Q., & Kwek, L. C. (2020). Efficient fusion of photonic W-states with nonunitary partial-swap gates. New Journal of Physics, 22, Article 093051. https://doi.org/10.1088/1367-2630/abb279
Abstract
We introduce a nonunitary partial-swap gate for fusing arbitrary small-sized photonic W-states into a large-scale entangled network ofW-state efficiently without ancillary photons. A partial-swap gate is designed in an optical architecture based on linear optics elements. By introducing auxiliary degree of freedom, this gate provides a higher success probability with less cost. Our implementation can create a larger target state with a simpler set-up than previous proposals forW-state fusion. Also all ‘garbage’ states are recyclable, i.e., there is no complete failure output in our scheme in principle.
Date Issued
2020
Publisher
IOP Publishing
Journal
New Journal of Physics
Grant ID
Grant No. 11604012
Grant No. FRF-BR-17-004B
Grant No. 230201506500024
Funding Agency
National Natural Science Foundation of China
Fundamental Research Funds for the Central Universities
China Scholarship Council.
Ministry of Education, Singapore
National Research Foundation (NRF), Singapore