Single qubit manipulation in a microfabricated surface electrode ion trap

TL;DR

This paper demonstrates high-fidelity single qubit operations on trapped $^{171}$Yb$^+$ ions in a microfabricated surface electrode trap, achieving long coherence times and stable trapping conditions suitable for quantum computing.

Contribution

It introduces a microfabricated surface electrode trap for $^{171}$Yb$^+$ ions and demonstrates complete high-fidelity single qubit control with long coherence times.

Findings

Trapping times exceeding 20 minutes without laser cooling

Heating rates as low as 0.8 quanta/ms

Coherence time over one second

Abstract

We trap individual $^{171}$Yb$^+$ ions in a surface trap microfabricated on a silicon substrate, and demonstrate a complete set of high fidelity single qubit operations for the hyperfine qubit. Trapping times exceeding 20 minutes without laser cooling, and heating rates as low as 0.8(0.1) quanta/ms indicate stable trapping conditions in these microtraps. A coherence time of more than one second, high fidelity qubit state detection and single qubit rotations are demonstrated.