Quantum state transfer via temporal kicking of information

TL;DR

This paper introduces a method for perfect quantum state transfer in spin chains using time-dependent coupling strengths, offering an alternative to traditional encoding and engineering techniques.

Contribution

It presents a novel approach leveraging temporal modulation of couplings for perfect quantum state transfer in spin chains.

Findings

Achieves perfect state transfer with specific temporal coupling conditions

Provides an alternative to coupling engineering and encoding methods

Demonstrates robustness under certain conditions

Abstract

We propose a strategy for perfect state transfer in spin chains based on the use of an unmodulated coupling Hamiltonian whose coefficients are explicitly time dependent. We show that, if specific and non-demanding conditions are satisfied by the temporal behavior of the coupling strengths, our model allows perfect state transfer. The paradigma put forward by our proposal holds the promises to set an alternative standard to the use of clever encoding and coupling-strength engineering for perfect state transfer.