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arXiv · 1702.07833

Single-laser-pulse implementation of arbitrary ZYZ rotations of an atomic qubit

Han-gyeol Lee·Yunheung Song·Jaewook Ahn
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Abstract

Arbitrary rotation of a qubit can be performed with a three-pulse sequence; for example, ZYZ rotations. However, this requires precise control of the relative phase and timing between the pulses, making it technically challenging in optical implementation in a short time scale. Here we show any ZYZ rotations can be implemented with a single laser-pulse, that is {\it a chirped pulse with a temporal hole}. The hole of this shaped pulse induces a non-adiabatic interaction in the middle of the adiabatic evolution of the chirped pulse, converting the central part of an otherwise simple Z-rotation to a Y rotation, constructing ZYZ rotations. The result of our experiment performed with shaped femtosecond laser pulses and cold rubidium atoms shows strong agreement with the theory.

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Han-gyeol Lee, Yunheung Song, Jaewook Ahn. 2017-06-28. Single-laser-pulse implementation of arbitrary ZYZ rotations of an atomic qubit. https://doi.org/10.1103/physreva.96.012326

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