title: High speed, high fidelity detection of an atomic hyperfine qubit.
abstract: 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.
authors: Rachel
authors: R
authors: Noek
authors: Geert
authors: G
authors: Vrijsen
authors: Daniel
authors: D
authors: Gaultney
authors: Emily
authors: E
authors: Mount
authors: Taehyun
authors: T
authors: Kim
authors: Peter
authors: P
authors: Maunz
authors: Jungsang
authors: J
authors: Kim