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

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.

arXiv comment5 pages 4 figures

References in corpus (10)

• Review article: Linear optical quantum computing
• Driven coherent oscillations of a single electron spin in a quantum dot
• Quantum computing with trapped ions
• Quantum computing with atomic qubits and Rydberg interactions: Progress and challenges
• Femtosecond Coherence and Quantum Control of Single Molecules at Room Temperature
• Universal gates based on targeted phase shifts in a 3D neutral atom array
• High-fidelity gates in a Josephson qubit
• Ultrafast Rabi oscillation of a Gaussian atom ensemble
• Quantum dynamics of a two-state system induced by a chirped zero-area pulse
• Selective excitation in a three-state system using a hybrid adiabatic-nonadiabatic interaction

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