2006/09/29 by Patrick M. Leung, P. M. Leung, Timothy C. Ralph +1 · 2 citations
Computer Science · Mathematics · Physics and Astronomy · #Absorption (acoustics) #Algorithm #Cold Atom Physics and Bose-Einstein Condensates #Computer science #Fidelity #High fidelity #Kappa #Mathematical analysis #Mathematics #Optics #Photon #Physics #Quantum Information and Cryptography #Quantum Zeno effect #Quantum mechanics #Quantum optics and atomic interactions #Sign (mathematics) #State (computer science) #Telecommunications #Zeno's paradoxes #quant-ph
paper · pdf · doi:10.1103/physreva.74.062325
6 pages, 11 figures, Submitted to PRA
arxiv created 2006/09/29 · openalex publication_date 2006/12/29 · arxiv updated 2015/06/26 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We have modeled the Zeno effect controlled-sign gate of Franson et al. [Phys. Rev. A 70, 062302 (2004)] and shown that high two-photon to one-photon absorption ratios, \ensuremathκ, are needed for high fidelity free-standing operation. Hence we instead employ this gate for cluster state fusion, where the requirement for \ensuremathκ is less restrictive. With the help of partially offline one-photon and two-photon distillations, we can achieve a fusion gate with unity fidelity but nonunit probability of success. We conclude that for \ensuremathκ>2200, the Zeno fusion gate will out perform the equivalent linear optics gate.