Nodurft, I.C.Franson, J.D.2021-06-152021-06-152021-05-28Nodurft, I.C.; Franson, J.D.; Error sources in heralded quantum Zeno gates; Quantum Physics, 28 May, 2021; https://arxiv.org/abs/2105.13853http://hdl.handle.net/11603/21748https://doi.org/10.48550/arXiv.2105.13853Quantum logic gates for photonic qubits can be implemented using the quantum Zeno effect based on strong two-photon absorption. The fidelity of quantum Zeno gates of this kind may be substantially reduced by photon loss. Heralding on those outcomes in which both of the logical qubits emerge from the Zeno gate can increase the fidelity at the expense of a limited success rate (P.M. Leung et al., Phys. Rev. A 74, 062325 (2006)). We analyze the performance of heralded quantum Zeno gates by solving Schrodinger's equation for a system of photons coupled to three-level atoms. This approach identifies several potential error sources that are not described by earlier models that assumed a fixed rate of single-photon loss and two-photon absorption.10 pagesen-USThis item is likely protected under Title 17 of the U.S. Copyright Law. Unless on a Creative Commons license, for uses protected by Copyright Law, contact the copyright holder or the author.Text