An Efficient On-chip Single-photon SWAP Gate for Entanglement Manipulation
Xiang Cheng, Kai-Chi Chang, Zhenda Xie, Yoo Seung Lee, Murat Can Sarihan, Abhinav Kumar, Yongnan Li, Serdar Kocaman, Tian Zhong, Mingbin Yu, Dim‐Lee Kwong, Jeffrey H. Shapiro, Franco N. C. Wong, Chee Wei Wong · Conference on Lasers and Electro-Optics · 2020
We demonstrate an on-chip single photon SWAP gate between polarization and spatial-momentum qubit. Our SWAP gate shows gate fidelity of 97.44%, and polarization entanglement preservation of SWAP operation is confirmed with average visibility over 98%.