Qubit Entanglement Driven by Remote Optical Fields

TL;DR

This paper explores how two remotely located qubits become entangled through independent optical fields, showing collapse and revival phenomena similar to cavity QED, revealing new insights into remote quantum entanglement dynamics.

Contribution

It demonstrates the possibility of entanglement dynamics driven solely by independent optical fields without direct qubit interaction, highlighting collapse and revival effects.

Findings

Entanglement varies over time with collapse and revival patterns.

Remote optical fields can induce and control qubit entanglement.

The behavior resembles phenomena observed in cavity QED systems.

Abstract

We examine the entanglement between two qubits, supposed to be remotely located and driven by independent quantized optical fields. No interaction is allowed between the qubits, but their degree of entanglement changes as a function of time. We report a collapse and revival of entanglement that is similar to the collapse and revival of single-atom properties in cavity QED.