Pulsed force sequences for fast phase-insensitive quantum gates in trapped ions

Abstract

We show how to create quantum gates of arbitrary speed between trapped ions using a laser walking wave, with complete insensitivity to the drift of the optical phase, and requiring cooling only to the Lamb–Dicke regime. We present pulse sequences that satisfy the requirements and are easy to produce in the laboratory.

Keywords

• ion trap
• quantum gate
• quantum computing
• fast gate
• pulse sequence
• fault tolerant