Error sources in heralded quantum Zeno gates

Thumbnail Image

Files

2105.13853.pdf (733.99 KB)

Links to Files

https://arxiv.org/abs/2105.13853

Permanent Link

http://hdl.handle.net/11603/21748
 https://doi.org/10.48550/arXiv.2105.13853

Collections

UMBC Physics Department
UMBC Faculty Collection
UMBC Student Collection

Author/Creator

Author/Creator ORCID

Date

2021-05-28

Type of Work

journal articles
preprints
Text

Department

Program

Citation of Original Publication

Nodurft, I.C.; Franson, J.D.; Error sources in heralded quantum Zeno gates; Quantum Physics, 28 May, 2021; https://arxiv.org/abs/2105.13853

Rights

This 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.

Subjects

Abstract

Quantum 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.