Breaking the Speed Limit for Perfect Quantum State Transfer

TL;DR

This paper presents a novel protocol for perfect quantum state transfer that surpasses the traditional speed limit by combining fractional revival, dual rail encoding, and the anti-Zeno effect under a fixed Hamiltonian.

Contribution

It introduces a new protocol enabling faster-than-limit perfect quantum state transfer using innovative quantum control techniques.

Findings

Achieves faster-than-limit quantum state transfer

Utilizes fractional revival and anti-Zeno effect

Demonstrates protocol effectiveness under fixed Hamiltonian

Abstract

We describe a protocol for perfectly transferring a quantum state from one party to another under the dynamics of a fixed, engineered Hamiltonian. Our protocol combines the concepts of fractional revival, dual rail encoding, and a rare glimpse of the anti-Zeno effect. Remarkably, the transfer happens faster than the speed limit for perfect quantum state transfer [1, 2].