High-fidelity fast quantum transport with imperfect controls

TL;DR

This paper demonstrates that high-fidelity quantum state transport is achievable non-adiabatically over arbitrary distances despite imperfect control distortions, which is crucial for scalable quantum computing.

Contribution

It introduces methods to achieve perfect quantum transport despite various control imperfections, advancing practical quantum information transfer techniques.

Findings

Perfect quantum state transfer is possible under distorted controls.

Non-adiabatic transport maintains high fidelity over any distance.

Control imperfections do not prevent successful quantum transport.

Abstract

Effective transport of quantum information is an essential element of quantum computation. We consider the problem of transporting a quantum state by using a moving potential well, while maintaining the encoded quantum information. In particular, we look at a set of cases where the input control defining the position of the potential well is subject to different types of distortion, each of which is motivated by experimental considerations. We show that even under these conditions, we are able to perfectly transfer the quantum information non-adiabatically over any given distance.