Periodic revival of entanglement of two strongly driven qubits in a dissipative cavity

TL;DR

This paper analyzes how two strongly driven qubits in a dissipative cavity experience entanglement decay and revival over time, revealing that non-zero detuning causes periodic entanglement revival, with different Bell states evolving uniquely.

Contribution

It provides analytical solutions for the entanglement dynamics of two non-interacting, off-resonantly coupled qubits in a dissipative environment, highlighting the effects of detuning on entanglement revival.

Findings

Entanglement exhibits decay followed by periodic revival with non-zero detuning.

Different Bell states have distinct evolution rates.

Analytical solutions describe the system's entanglement dynamics.

Abstract

We study the dynamics and decoherence of a system of two strongly driven qubits in a dissipative cavity. The two qubits have no direct interaction and are individually off-resonantly coupled to a single mode of quantized radiation. We derive analytical solutions to the Lindblad-type master equation and study the evolution of the entanglement of this system. We show that with non-zero detuning between the quantum and classical fields, the initial decay of the entanglement is followed by its revival periodic in time. We show that different Bell states follow evolutions with different rates.