Quantum synchronization and entanglement of two qubits coupled to a driven dissipative resonator

TL;DR

This paper investigates how two superconducting qubits coupled to a driven dissipative resonator can become synchronized and entangled, enabling potential applications in microwave quantum communication.

Contribution

It demonstrates the emergence of synchronization and entanglement in coupled qubits driven by a dissipative resonator, highlighting new quantum communication possibilities.

Findings

Qubits synchronize above a critical coupling strength.

Entanglement occurs even with dissimilar qubits.

Potential for entangled microwave photon emission.

Abstract

Using method of quantum trajectories we study the behavior of two identical or different superconducting qubits coupled to a quantum dissipative driven resonator. Above a critical coupling strength the qubit rotations become synchronized with the driving field phase and their evolution becomes entangled even if two qubits may significantly differ from one another. Such entangled qubits can radiate entangled photons that opens new opportunities for entangled wireless communication in a microwave range.