High speed, high fidelity detection of an atomic hyperfine qubit.


Journal Article

Fast and efficient detection of the qubit state in trapped ion systems is critical for implementing quantum error correction and performing fundamental tests such as a loophole-free Bell test. In this work we present a simple qubit state detection protocol for a (171)Yb+ hyperfine atomic qubit trapped in a microfabricated surface trap, enabled by high collection efficiency of the scattered photons and low background photon count rate. We demonstrate average detection times of 10.5, 28.1, and 99.8 μs, corresponding to state detection fidelities of 99%, 99.856(8)%, and 99.915(7)%, respectively.

Full Text

Duke Authors

Cited Authors

  • Noek, R; Vrijsen, G; Gaultney, D; Mount, E; Kim, T; Maunz, P; Kim, J

Published Date

  • November 2013

Published In

Volume / Issue

  • 38 / 22

Start / End Page

  • 4735 - 4738

PubMed ID

  • 24322119

Pubmed Central ID

  • 24322119

Electronic International Standard Serial Number (EISSN)

  • 1539-4794

International Standard Serial Number (ISSN)

  • 0146-9592

Digital Object Identifier (DOI)

  • 10.1364/ol.38.004735


  • eng