Nonadiabatic population transfer in a tangent-pulse driven quantum model

TL;DR

This paper introduces a tangent-pulse driven quantum control protocol that achieves fast, accurate population transfer, suppressing errors even at high velocities, offering a promising approach for quantum information processing.

Contribution

It presents a novel control scheme using tangent pulses that is both fast and robust against errors, unlike existing methods.

Findings

High velocity nonadiabatic evolution suppresses unwanted transitions.

The scheme achieves fast and accurate population transfer.

Error suppression occurs despite truncation of the driving pulse.

Abstract

Fine control of the dynamics of a quantum system is the key element to perform quantum information processing and coherent manipulations for atomic and molecular systems. In this paper we propose a control protocol using a tangent-pulse driven model and demonstrate that it indicates a desirable design, i.e., of being both fast and accurate for population transfer. As opposed to other existing strategies, a remarkable character of the present scheme is that high velocity of the nonadiabatic evolution itself not only will not lead to unwanted transitions but also can suppress the error caused by the truncation of the driving pulse.