The transport character of quantum state in one-dimensional coupled-cavity-arrays: effect of the number of photons and entanglement degree

TL;DR

This paper investigates how photon number and entanglement influence quantum state transport in one-dimensional coupled-cavity-arrays, revealing that entanglement enhances transmission efficiency and can enable perfect state transfer.

Contribution

It demonstrates that entanglement degree significantly improves quantum state transport in CCAs, with maximum entanglement allowing perfect transmission regardless of photon number.

Findings

Photon number does not alter the evolution cycle or key state formation times.

Entanglement enhances state transmission efficiency.

Maximum entanglement enables complete quantum state transfer without photon loss.

Abstract

The transport properties of the photons injected into one-dimensional coupled-cavity-arrays (CCAs) are studied. It is found that the number of photons cannot change the evolution cycle of the system and the time points at which W states and NOON state are obtained with a relatively higher probability. Transport dynamics in the CCAs exhibits that entanglement-enhanced state transmission is more effective phenomenon, and we show that for a quantum state with the maximum concurrence, it can be transmitted completely without considering the case of photon loss.