Linear-Optical Proposal for Implementation of the Two-Logic-Qubit Controlled Phase Gate in Decoherence-Free Subspace with Conventional Photon Detectors
1. Department of Physics, Harbin Institute of Technology, Harbin, Heilongjiang, 150001, People’s Republic of China 2. Department of Physics, College of Science, Yanbian University, Yanji, Jilin, 133002, People’s Republic of China