Photon-assisted tunneling in a Fe8 Single-Molecule Magnet

TL;DR

This study demonstrates photon-assisted tunneling in a Fe8 single-molecule magnet, revealing linear behavior at low power and non-linear effects at higher power, with implications for quantum computing applications.

Contribution

First experimental observation of photon-assisted tunneling in a Fe8 single-molecule magnet, highlighting power-dependent non-linear effects relevant for quantum technologies.

Findings

Photon-assisted tunneling observed in Fe8 magnet

Non-linear effects emerge at higher radiation power

Coupling to thermostat influences tunneling behavior

Abstract

The low temperature spin dynamics of a Fe8 Single-Molecule Magnet was studied under circularly polarized electromagnetic radiation allowing us to establish clearly photon-assisted tunneling. This effect, while linear at low power, becomes highly non-linear above a relatively low power threshold. This non-linearity is attributed to the nature of the coupling of the sample to the thermostat.These results are of great importance if such systems are to be used as quantum computers.