2006/10/31 by Xiao‐Hui Bao, Xiao-Hui Bao, Teng-Yun Chen +6 · 3 citations
Computer Science · Physics and Astronomy · #Computer science #Controlled NOT gate #Fidelity #Optics #Optoelectronics #Photon #Photon entanglement #Physics #Quantum #Quantum Computing Algorithms and Architecture #Quantum Information and Cryptography #Quantum Mechanics and Applications #Quantum computer #Quantum entanglement #Quantum gate #Quantum mechanics #Quantum network #Quantum optics #Quantum sensor #Telecommunications #Weak measurement #quant-ph
paper · pdf · doi:10.1103/physrevlett.98.170502
published as Phys. Rev. Lett. 98 170502 (2007) · 5 pages, 3 figures, Slight changes have been made, Journal-ref added
openalex publication_date 2007/04/24 · arxiv created 2007/05/08 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We present and experimentally demonstrate a novel optical nondestructive controlled-NOT gate without using entangled ancilla. With much fewer measurements compared with quantum process tomography, we get a good estimation of the gate fidelity. The result shows a great improvement compared with previous experiments. Moreover, we also show that quantum parallelism is achieved in our gate and the performance of the gate cannot be reproduced by local operations and classical communications.