Quantum steering of a two-mode Gaussian state using a quantum beat laser

Area of Science:

• Quantum optics
• Quantum information theory
• Laser physics

Background:

• Quantum steering is a fundamental quantum phenomenon.
• Gaussian states are crucial in quantum optics and information.
• Quantum beat lasers provide a platform for studying quantum dynamics.

Purpose of the Study:

• Investigate quantum steering of a two-mode Gaussian state.
• Analyze the influence of cavity damping and coupling fields.
• Explore the role of initial state properties on steerability.

Main Methods:

• Simulating a two-mode Gaussian state interacting with a quantum beat laser.
• Analyzing the evolution of the quantum state under cavity damping.
• Quantifying quantum steering using established theoretical frameworks.

Main Results:

• Quantum steering time increases with relative intensity of coupling fields.
• Relative phase between fields determines steerability of the quantum state.
• Higher initial non-classicality of cavity modes leads to longer steerability time.
• Quantum steering is independent of the purity of initial cavity modes.

Conclusions:

• The dynamics of quantum steering are significantly influenced by laser parameters and initial state characteristics.
• Cavity damping and coupling field properties offer control over quantum steerability.
• Non-classicality of initial states is a key factor for sustained quantum steering.